Case_macro8c1_Ch8 - Chapter 8 Aggregate Expenditure and...

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Unformatted text preview: Chapter 8 Aggregate Expenditure and Equilibrium Output Principles of Macroeconomics, Case/Fair, 8e 8.1 Aggregate Output and Aggregate Income Multiple Choice 1 Aggreg ate expenditure includes A . consumption and investment only. B . consumption, investment, government spending, and imports only. C . n, investment, government spending, and net exports only. consumptio D . consumption, investment, government spending, and exports only. Answer : C Assume that exports and imports are equal. The economy is in equilibrium when A . Y > C + I + G. B . Y < C + I + G + (EX ­ IM). C . Y = C + I + G. D . None of the above Answer : C The equilibrium interest rate in the economy is determined A . in the goods and services market. B . by equating the aggregate demand and the aggregate supply curves. C . in the labor market. D . in the money market. Answer : D If real GDP is $5 trillion, this implies that A . the total spending by consumers and business is $5 trillion. B . the total income received is $5 trillion. C . the total output produced is $5 trillion. D . B and C are correct. Answer : D The MPC is A . the change in consumption divided by the change in income. B . consumption divided by income. C . the change in consumption divided by the change in saving. D . the change in saving divided by the change in income. Answer : A The MPS is A . the change in saving divided by the change in income. B . 1 + MPC C . income divided by saving. D . All of the above Answer : A Saving equals A . Y ­ C. B . Y ­ planned I. C . Y ­ actual I. D . Inventory changes. Answer : A If the MPS is .20, MPC A . is 1.20. B . is .85. C . is .80. D . cannot be determined by the given information. Answer : C If you additional $100 in disposable income one week for mowing your earn neighbors lawn, A . the total of your consumption and saving will increase by more than $100. B . the total of your consumption and saving will increase by $100. C . the total of your consumption and saving will increase by less than $100. D . your n will increase by more than $100, even if your MPS is 0.1. consumptio Answer : B If Jack received a $1,000 bonus and his MPS is 0.25, his consumption rises by $________ and his saving rises by $________. A . 150; 500 B . 850; 150 C . 750; 250 D . 1,000; 150 Answer : C Saving is a ________ variable and savings is a ________ variable. A . flow; flow B . stock; stock C . flow; stock D . stock; flow Answer : C Uncert ainty about the future is likely to A . increase current spending. B . have no impact on current spending. C . decrease current spending. D . either increase or decrease current spending. Answer : C Higher interest rates are likely to A . have no effect on consumer spending or saving. B . decrease consumer spending and increase consumer saving. C . decrease both consumer spending and consumer saving. D . increase consumer spending and decrease consumer saving. Answer : B (put in bank to save, borrowing to spend expensive) Consum ption is A . household income and wealth and households' expectations about the positively future, but negatively related to interest rates. related to B . related to household income and wealth, interest rates, and negatively households' expectations about the future. C . determined only by income. D . related to household income and wealth, interest rates, and positively households' expectations about the future. Answer : A (r increases, Consumption decreases) In a closed economy with no government, aggregate expenditure is A . consumption plus investment. B . saving plus investment. C . consumption plus the MPC. D . MPC + MPS. Answer : A If s income is reduced to zero after she loses her job, her consumption Emily' will be ________ and her saving will be ________. A . less than zero; less than zero B . greater than zero; greater than zero C . less than zero; greater than zero D . greater than zero; less than zero Answer : D (she will have to consume so 0= +ve + saving => saving=­ve) If consumption is $1,500 a month, the fraction of her income that she Sara's consumes is 60%, and her income is $2,000, the amount of money she total consumes when her income is zero is A . $300. C=a+bY find a B . $500. C . $200. D . $1,200. Answer : A Refer to the information provided in Figure 8.1 below to answer the questions that follow. Figure 8.1 Refer Figure 8.1. The MPS for this household is ________ and the MPC is to ________. A . 0.4; 0.6 B . 0.5; 0.5 C . 0.2; 0.8 D . 0.3; 0.7 Answer : C Refer to Figure 8.1. The equation for this household's saving function is A . S = ­200 + .8Y. B . S = ­300 + 0.3Y. C . S = ­200 + .2Y. D . S = ­1,000 + 0.3Y. Answer : C Refer 8.1. At income level $1,200, this household's saving is ________ than to (to) zero and this household's consumption is ________ than (to) zero. Figure A . less; greater B . equal; equals C . greater; less D . greater; greater Answer : D Refer to Figure 8.1. This household's consumption function is A . C = 300 + 0.7Y. B . C = 200 + 0.8Y. C . C = 200 + 0.2Y. D . C = 1,000 + 0.8Y. Answer : B Refer to Figure 8.1. This household saves ­$50 at an income level of A . $750. B . $833.3. C . $1000. D . $890.3. Answer : A Refer to Figure 8.1. This household consumes $1,300 at an income level of A . $1,375. B . $1,873.5. C . $1,428.6. D . $1000. Answer : A Refer Figure 8.1. An increase in the amount of consumption this household to makes when this household's income is zero A . makes the consumption function steeper. B . makes the saving function flatter. C . shifts the consumption function downward. D . shifts the saving function downward. Answer : D (cz C=200+ …) at o c increases means Y intercept increases for ex to 300 then S=­300+bY so it shifts down Refer to Figure 8.1. An increase in the MPC A . makes the consumption function flatter. B . makes the saving function flatter. C . shifts the consumption function upward. D . shifts the saving function downward. Answer : B (cz for ex 0.3 to 0.8 makes C steeper so Mps becomes 0.20 Refer to the information provided in Figure 8.2 below to answer the questions that follow. Figure 8.2 Refer to Figure 8.2. The line segment BD represents Jerry's A . consumption when income equals Y1. B . saving when income equals zero. C . saving when income is Y1. D . consumption when income equals zero. Answer : D Refer to Figure 8.2. Jerry's consumption equals his income at Point A . B. B . A. C . D. D . C. Answer : B Refer to Figure 8.2. Jerry's saving equals zero at income level A . zero. B . Y1. C . Y2. D . Y2 ­ Y1. Answer : B (S=0 when Refer to Figure 8.2. Along the line segment AC, Jerry's A . consumption equals his income. B . consumption is greater than his income. C . saving is zero. D . saving is positive. Answer : D Refer to Figure 8.2. Along the segment AB, Jerry's A . consumption is less than his income. B . saving is positive. C . consumption equals his income. D . saving is negative. Answer : D Refer to Figure 8.2. Saving occurs along the line segment A . BC. B . DC. C . AC. D . BA. Answer : C Refer to Figure 8.2. An increase in Jerry's income is represented by A . an upward shift in Jerry's consumption function. B . an increase in the slope of Jerry's consumption function. C . a movement from Point B to A. D . None of the above Answer : C Refer to Figure 8.2. Suppose Jerry's MPC increases. At income Y1, Jerry's A . consumption will be greater than his income. B . consumption will be less than his income. C . saving will be zero. D . All of the above Answer : A (I think steeper => draw and see that intersection is higher so C>I ) The fraction of a change in income that is consumed or spent is called A . the marginal propensity of income. B . the marginal propensity to save. C . the marginal propensity to consume. D . average consumption. Answer : C If you save $20 when you experience a $200 rise in your income, A .your MPS is 0.3. B .your MPC is 0.9. C . your MPC is 0.85. D . your MPS is 0.8. Answer : B If ption is $25,000 when income is $26,000, and consumption increases to consum $26,100 when income increases to $28,000, the MPC is A . .59. B . .65. C . .55. D . .45. Answer : C (delta C/ If ption is $5,000 when income is $5,000, and consumption increases to consum $9,000 when income increases to $10,000, the MPS is A . .29. B . .8. C . .2. D . .33. Answer : C Suppos consumption is $4,000 when income is $6,000 and the MPC equals 0.9. e When income increases to $7,000, consumption is A . $5,700. B . $5,600. C . $4,900. D . $4,800. Answer : C (0.9= ((4000­x)/ (6000­7000) Suppos saving is $2,000 when income is $10,000 and the MPC equals 0.8. When e income increases to $15,000, saving is A . $4,000. B . $3,000. C . $2,400. D . $5,000. Answer : B (0.2=(2000­ S)/10000­ 15000) Suppos consumption is $10,000 when income is $9,000 and the MPS equals 0.2. e When income increases to $9,500, consumption is A . $9,600. B . $10,450. C . $10,400. D . $10,040. Answer : C If the MPS is .35, the MPC is A . .45. B . .65. C . 1.45. D . 2.55. Answer : B If the MPS is .15, the MPC is A . .45. B . ­.85. C . .85. D . 1.85. Answer : C If the consumption function is of the form C = 80 + 0.5Y, the MPS equals A . ­0.5. B . 0.4. C . 0.5. D . ­0.4. Answer : C If the function is of the form S = ­20 + 0.3Y, consumption at an income level saving of 120 is A . 20. B . 90. C . 104. D . 56. Answer : C If r's consumption function is of the form C = 100 + 0.75Y, her saving Heathe equals zero at an income level of A . 350. B . 400. C . 500. D . Cannot be determined from the given information. Answer : B (Y=C+S at S=0 Y=C=100=0.75Y) If saving function is of the form S = ­150 + 0.1Y, his consumption equals Rick's his income (Saving =0) at an income level of A . 500. B . 50. C . 5,000. D . 1,500. Answer : D (0=­150 + Refer to the information provided in Table 8.1 below to answer the questions that follow. Table 8.1 Refer to Table 8.1. The equation for the aggregate consumption function is A . C = 80 + .85Y. B . C = 80 + .8Y. C . C = 80 + .75Y. D . C = ­80 + .45Y. Answer : B Refer to Table 8.1. Society's MPC is A . 0.8. B . 0.2. C . 0.65. D . 0.75. Answer : A Refer to Table 8.1. Society's MPS is A . 0.25. B . 0.2. C . 0.35. D . 0.8. Answer : B Refer Table 8.1. At an aggregate income level of $300, aggregate saving to would be A . ­$5. B . $50. C . ­$20. D . $60. Answer : C Refer Table 8.1. Assuming society's MPC is constant at an aggregate of to income of $500, aggregate consumption would be ________. A . $240. B . $455. C . $480. D . $350. Answer : C Refer to the information provided in Table 8.2 below to answer the questions that follow. Table 8.2 Refer to Table 8.2. The equation for the aggregate saving function is A . S = ­50 + .2Y. B . S = ­150 + .2Y. C . S = ­150 + .1Y. D . S = ­100 + .9Y. ?????? (if 50+130/ 900) Answer : B 0 Refer to Table 8.2. Society's MPC is A . 0.1. B . 0.2. C . 0.8. D . 0.9. Answer : C Refer to Table 8.2. Society's MPS is A . 0.2. B . 0.3. C . 0.1. D . 0.9. Answer : A Refer Table 8.2. Assuming society's MPC is constant, at an aggregate income to level of $1,500, aggregate consumption would be A . $1,200. B . $1,350. C . $1,450. D . $1,500. Answer : B Refer Table 8.2. Assuming society's MPC is constant, at an aggregate income to of $2,000 aggregate saving would be ________. A . $50 B . $250 C . ­$60 D . ­$150 Answer : B Refer to the information provided in Figure 8.3 below to answer the questions that follow. Figure 8.3 Refer to Figure 8.3. The equation for the aggregate consumption function is A . C = 140 + .5Y. B . C = 60 + .7Y. C . C = 80 + .6Y. D . C = 60 + .4Y. Answer : B Refer to Figure 8.3. The equation for the aggregate saving function is A . S = ­60 + .3Y. B . S = ­200 + .6Y. C . S = ­140 + .5Y. D . S = ­80 + .4Y Answer : A Refer Figure 8.3. In this economy, aggregate saving will be zero if income to is A . $100 billion. B . $200 billion. C . $300 billion. D . $400 billion. Answer : B (S=0 => Y= Refer Figure 8.3. For this society, aggregate saving is positive if to aggregate income is A . above zero. B . between $0 and $150 billion. C . equal to $200 billion. D . above $200 billion. Answer : D Refer Figure 8.3. If aggregate income is $1,000 billion, then in this to society aggregate saving is ________ billion. A . $300 B . $320 C . $240 D . $550 Answer : C Refer to Figure 8.3. Which of the following statements is FALSE? A . saving is negative for all income levels below $400 billion. Aggregate B . For all income levels above $200 billion, aggregate consumption is less aggregate than aggregate income. C . If n is the only expenditure, this economy would be in equilibrium at consumptio an aggregate income level of $200 billion. D . Saving is negative at all income levels below $200 billion. Answer : A Refer to the information provided in Figure 8.4 below to answer the questions that follow. Figure 8.4 Refer to Figure 8.4. The aggregate consumption functions C1 and C2 A . have the same MPC. B . imply the same MPS. C . differ in terms of the amount of consumption when income is zero. D . All of the above Answer : D Refer to Figure 8.4. Which consumption function has the largest MPC? A . C1. B . C2. C . C3. (steepest) D . Cannot be determined from the figure. Answer : C Refer Figure 8.4. Suppose the consumption function for C1 = 10 + 0.8Y, the to consumption function that best fits C2 is A . C2 = 20 + 0.8Y. B . C2 = 10 + 0.4Y. C . C2 = 40 + 0.5Y. D . C2 = 20 + 0.1Y. Answer : A Refer Figure 8.4. Suppose the consumption function for C1 = 20 + 0.5Y, the to consumption function that best fits C3 is A . C3 = 20 + 0.8Y. B . C3 = 20 + 0.4Y. C . C3 = 40 + 0.5Y. D . C3 = 40 + 0.4Y. Answer : A Refer Figure 8.4. If income is Y1, aggregate consumption is the greatest to when the aggregate consumption function is A . C3. B . C2. C . C1. D . Cannot be determined from the figure. Answer : B Refer to Figure 8.4. If income is Y2 A . the society's saving is negative along C1, C2, and C3. B . the society's consumption is equal along C2 and C3. C . the society's saving is positive along C2 and C3. D . the society's savings is negative along C1. Answer : B If the consumption function is below the 45­degree line, A . consumption is less than income and saving is positive. B . consumption is less than income and saving is negative. C . consumption exceeds income and saving is positive. D . consumption exceeds income and saving is negative. Answer : A Refer to the information provided in Figure 8.5 below to answer the questions that follow. Figure 8.5 Refer to Figure 8.5. The MPS for this saving function is A . 5. B . 0.25. C . 0.5. D . 4. Answer : B Refer Figure 8.5. If aggregate income is $400 billion, aggregate saving is to ________ billion. A . ­$300 B . ­$100 C . $0 D . $500 Answer : B Refer Figure 8.5. If aggregate income is $900 billion, aggregate consumption to A . is $25 billion. B . is $800 billion. C . is $875 billion. D . cannot be determined from this information. Answer : C (C=Y­S . Refer Figure 8.5. If aggregate consumption is the only expenditure in this to society, the equilibrium level of income A . is $400 billion. B . is $800 billion. (S=0=­200+0.25Y . find Y. cz Y=C ) C . is $900 billion. D . cannot be determined from this information. Answer : B Refer to the information provided in Figure 8.6 below to answer the questions that follow. Figure 8.6 Refer to Figure 8.6. The MPS for this saving function is A . .4. B . .2. C . .25. D . .1. Answer : D Refer Figure 8.6. If aggregate income is $800, aggregate saving is ________. to A . ­$100 B . ­$20 C . $40 D . $20 Answer : D Refer to Figure 8.6. If aggregate income is $1,000, aggregate consumption is A . $850. B . $960. C . $910. D . $920. Answer : B (S=­ 60+0.1*1000=40 . C=1000­40)or C=60+0.9Y Refer Figure 8.6. If aggregate consumption is the only expenditure in this to society, the equilibrium level of income is A . $120. B . $600. (Y= C . $900. D . Cannot be determined from the figure. Answer : B Y=60+0.6Y The Tiny Tots Toy Company manufactures only sleds. In 1999 Tiny Tots manufactured 10,000 sleds, but sold only 8,000 sleds. In 1999 Tiny Tots' change in inventory was A . ­2,000 sleds. B . 1,000 sleds. C . 2,000 sleds. D . 3,000 sleds. Answer : C The Company manufactures only tools. In 1998 Jackson Tools manufactured Jackso 20,000 tools, but sold 21,000 tools. In 1998 Jackson Tools' change in n Tool inventory was A . ­2,000 tools. B . 1,000 tools. C . ­1,000 tools. D . 3,000 tools. Answer : C Which of the following is NOT considered investment? A . The acquisition of capital goods B . The purchase of government bonds C . The increase in planned inventories D . The construction of a new factory Answer : B Which of the following is an investment? A . The purchase of a new printing press by a business. B . The purchase of a corporate bond by a household. C . The purchase of a share of stock by a household. D . All of the above Answer : A Over component of investment do firms have the least amount of control? which A . Purchases of new equipment. B . Construction of new factories. C . Changes in inventories. D . Building new machines. Answer : C Assume in Montega, planned investment is $50 billion but actual investment is that $40 billion. Unplanned inventory investment is A . ­$10 billion. B . $80 billion. C . ­$20 billion. D . $20 billion. Answer : A Assume in Smirnoff, planned investment is $50 billion, but actual investment that is $55 billion. Unplanned inventory investment is A . ­$5 billion. B . ­$15 billion. C . $5 billion. D . ­$40 billion. Answer : C If ned business investment is $40 million and planned investment is $30 unplan million, then actual investment is A . $80 million. B . $70 million. C . $10 million. D . ­$10 million. Answer : B In 1999 Outland's planned investment was $60 billion and its actual investment was $80 billion. In 1999 Outland's unplanned inventory change was A . ­$20 billion. B . $1.4 billion. C . $20 billion. D . $30 billion. Answer : C If planned investment exceed actual investment, A . there will be an accumulation of inventories. B . there will be no change in inventories. C . there will be a decline in inventories. D . None of the above ???????? Answer : C If Inventory investment is higher than firms planned, A . actual and planned investment are equal. B . actual investment is less than planned investment. C . actual investment is greater than planned investment. D . actual investment must be negative. Answer : C Refer to the information provided in Figure 8.7 below to answer the questions that follow. Figure 8.7 Refer Figure 8.7. In Azora, planned investment does not vary with income. to Azora's planned investment function is represented by A . Panel A. B . Panel B. C . Panel C. D . Panel D. Answer : B Refer Figure 8.7. In Farley, planned investment varies inversely with to income. Farley's planned investment function is represented by A . Panel A. B . Panel B. C . Panel C. D . Panel D. Answer : D Withou government or the foreign sector in the income­expenditure model, t the planned aggregate expenditure equals A . consumption plus actual investment. B . consumption plus inventory adjustment. C . consumption minus planned investment. D . consumption plus planned investment. Answer : D True/False 1) As interest rates fall, spending decreases. Answer: True F U Diff: 1 Answer: Skill: C True F T Diff: 1 Answer: Skill: C True F I prope Diff: 1 nsity f Skill: D to t consu hme eis .8, the m margi anal r prope gnsity i to nsave ais 8. l Answer: True F I Diff: 1 Answer: Skill: F True F I stmen Diff: 1 t is f Skill: A greate ar than cplann t ed uinvest ament, l unpla nned i invent nories vdeclin ee. Answer: True F A Diff: 2 Answer: Skill: F True F Fto an Diff: 2 unpla i Skill: F r nned m invent s ory invest r ment eby aincrea csing t output . Answer: True F F Diff: 2 Answer: Skill: C True F I ing Diff: 2 excee f Skill: C ds pplann l ed ainvest nment, ninjecti eons dare greate s r than aleaka vges. Answer: True F I Diff: 2 Answer: Skill: F True F Choi Diff: 2 ce Skill: C 1) 8 . 2 E q u i l i b r i u m A g g r e g a t e O u t p u t ( I n c o m e ) M u l t i p l e In oeconomics, equilibrium is defined as that macr point at which . saving equals consumption. B . planned aggregate expenditure equals aggregate output. C . planned aggregate expenditure equals consumption. D . aggregate output equals consumption minus investment. Answer : B The economy can be in equilibrium if, and only if, A . planned investment is zero. B . actual investment is zero. C . planned investment is greater than actual investment. D . planned investment equals actual investment. Answer : D If aggregate output(Y) is greater than planned spending (AE), then A . unplanned inventory investment is zero. B . unplanned inventory investment is negative. C . unplanned inventory investment is positive. D . actual investment equals planned investment. Answer : C If unplanned inventory investment is positive, then A . planned investment must be zero. B . planned aggregate spending must be greater than aggregate . output. C . planned aggregate spending must be less than aggregate output. D . planned aggregate spending must equal aggregate output. Answer : C (unplanned If aggregate output equals planned aggregate expenditure, then A . unplanned inventory investment is zero. B . unplanned inventory adjustment is negative. C . unplanned inventory adjustment is positive. D . actual investment is greater than planned investment. Answer : A Refer to the information provided in Table 8.3 below to answer the questions that follow. Table 8.3 Refer Table 8.3. At an aggregate output level of $400 billion, planned to expenditure equals (AE=C+I) A . $550 billion. B . $450 billion. C . $500 billion. D . $850 billion. Answer : A Refer Table 8.3. At an aggregate output level of $800 billion, aggregate to saving A . equals ­ $50 billion. B . equals $0. C . equals $50 billion. D . cannot be determined from this information. Answer : A ?????? 50! Refer Table 8.3. At an aggregate output level of $200 billion, the unplanned to inventory change is A . ­$150 billion. B . ­$200 billion. C . ­$50 billion. D . $100 billion. Answer : B (unplanned Refer Table 8.3. At an aggregate output level of $600 billion, the unplanned to inventory change is A . ­$100 billion. B . ­$50 billion. c . $0. D . $50 billion. Answer : A Refer Table 8.3. If aggregate output equals ________, there will be a $100 to billion unplanned decrease in inventories. A . $200 billion B . $400 billion C . $600 billion D . $800 billion Answer : C (Y­AE=­ Refer to Table 8.3. The equilibrium level of aggregate output equals A . $400 billion. B . $600 billion. C . $800 billion. D . $1,000 billion. Answer : D Refer to Table 8.3. Which of the following statements is FALSE? A . At output levels greater than $800 billion, there is a positive unplanned inventory change. B . If output equals $1000 billion, then aggregate saving equals $0. aggregate C . The MPC for this economy is .75. D . At an level of $400 billion, there is a $150 billion unplanned inventory output decrease. Answer : A Refer Table 8.3. Planned saving equals planned investment at an aggregate to output level A . of $1000 billion. B . of $600 billion. C . of $800 billion. D . that cannot be determined from this information. Answer : A (S=I at eq Refer to Table 8.3. Planned investment equals actual investment at A . all income levels. B . all income levels above $600 billion. C . all income levels below $600 billion. D . $1000 billion. (Maybe when AE=Y at eq then act=planned) Answer : D Refer to the information provided in Table 8.4 below to answer the questions that follow. Table 8.4 Refer Table 8.4. At an aggregate output level of $2,000 million, planned to expenditure equals A . $2,000. B . $2,500. C . $2,300. D . $2,400. Answer : B Refer to Table 8.4. The MPC in this economy is A . 0.5. B . 0.6. C . 0.7. D . 0.8. Answer : B Refer Table 8.4. At an aggregate output level of $3,000 million, the to unplanned inventory change is A . $1,000 million. B . 0. C . $200 million. D . ­$200 million. Answer : D (Y­AE) Refer Table 8.4. At an aggregate output level of $4,000 million, the to unplanned inventory change is A . 0. B . $200 million. C . ­$200 million. D . ­$20 million. Answer : B Refer Table 8.4. If aggregate output equals ________, there will be a $50 to million unplanned decrease in inventories. A . $2,500 million B . $2,000 million C . $3,500 million D . $4,000 million Answer : A Refer to Table 8.4. The equilibrium level of aggregate output equals A . $2,000 million. B . $2,500 million. C . $3,000 million. D . $3,500 million. Answer : D Refer to Table 8.4. Which of the following statements is FALSE? A . At an output level $3,000, there is a $200 million unplanned inventory decrease. B . If output equals $3,000 million, then aggregate saving . equals $1000 aggregate million. C . The MPC for this economy is .6. D . At an level of $2,000 million, there is a $500 million unplanned output inventory decrease. Answer : B Refer Table 8.4. Planned saving equals planned investment at an aggregate to output level of (Y=AE) A . $3,500 million. B . $4,000 million. C . $3,000 million. D . $2,500 million. Answer : A Refer to Table 8.4. Planned investment equals actual investment at A . all income levels. B . all income levels above $3,500 million. C . all income levels below $3,500 million D . an income level of $3,500 million. Answer : D (Y=AE) If C = 100 + .8Y and I = 50, then the equilibrium level of income is A . 600. B . 375. C . 187.5. D . 750. Answer : D (y=c+I) If C = 500 + .9Y and I = 400, then the equilibrium level of income is A . 900. B . 1,800. C . 1,000. D . 9,000. Answer : D If S = ­200 + 0.2Y and I = 100, then the equilibrium level of income is A . 3,000. B . 1,500. C . 4,000. D . 1,200. Answer : B (at eq S=I=100=­ 200+0.2Y) If C = + .75Y and I = 500, then planned saving equals planned investment 1,500 (meantime Y=C+I) at aggregate output level of A . 8,000. B . 20,000. C . 2,666.67. D . 10,000. Answer : A Refer to the information provided in Figure 8.8 below to answer the questions that follow. Figure 8.8 Refer Figure 8.8. What is the equation for the aggregate expenditure to function (AE)? A . AE = 200 + .5Y. B . AE = 150 + .25Y. C . AE = 200 + .8Y. D . AE = 350 + .6Y. Answer : B Refer to Figure 8.8. Equilibrium output equals A . 100. B . 200. C . 150. D . 300. Answer : B Refer to Figure 8.8. At aggregate output level $300 million, there is a A . $75 million increase in unplanned inventories. B . $75 million decrease in unplanned inventories. C . $100 million decrease in inventories. D . $100 million increase in inventories. Answer : A (unp inv= Refer to Figure 8.8. At aggregate output level $100 million, there is a A . $75 million increase in unplanned inventories. B . $75 million decrease in unplanned inventories. C . $100 million decrease in inventories. D . $100 million increase in inventories. Answer : B Refer 8.8. How will equilibrium aggregate expenditure and equilibrium to aggregate output change as a result of a decrease in investment by $20 Figure million? A . AE line down, increasing equilibrium output and equilibrium expenditure. shifts B . AE line increasing equilibrium output and equilibrium expenditure. shifts up, C . AE line down, decreasing equilibrium output and . equilibrium expenditure. shifts D . AE line down, increasing equilibrium output and decreasing equilibrium shifts expenditure. Answer : C 33) Refer Figure 8.8. Leakages are greater than injections at an aggregate to output level of A . Cannot be determined from the figure. B . $100 million. C . $200 million. D . $300 million. Answer : D (S>I => S+C>I+C => Y>AE) Refer to the information provided in Figure 8.9 below to answer the questions that follow. Figure 8.9 Refer Figure 8.9. What is the equation for the aggregate expenditure to function (AE)? A . AE = 600 + .1Y. B . AE = 200 + .8Y. C . AE = 550 + .8Y. D . AE = 100 + .9Y. Answer : B Refer Figure 8.9. At an aggregate output level of $500 million, there is a to A . $100 million unplanned increase in inventories. B . $175 million unplanned decrease in inventories. C . $0 change in unplanned inventories. D . $100 million unplanned decrease in inventories. Answer : D (unpl inv =Y­AE= 500­ 600) Refer Figure 8.9. At aggregate output levels above $1,000 million, there are to A . unplanned increases in inventories and output increases. B . unplanned decreases in inventories and output increases. C . unplanned decreases in inventories and output decreases. D . unplanned increases in inventories and output decreases. Answer : D (Y>AE , so output decreases cz output> spending) Refer Figure 8.9. At aggregate output levels below $1,000 million, there are to A . unplanned decreases in inventories and output increases. B . unplanned increases in inventories and output increases. C . unplanned increases in inventories and output decreases. D . unplanned decreases in inventories and output decreases. Answer : A Refer to Figure 8.9. At aggregate output levels above $1,000 million, A . leakages equal injections. B . leakages are more than injections. C . leakages are zero, but injections are positive. D . leakages are less than injections. Answer : B (Y>AE S>I) Refer to Figure 8.9. At aggregate output levels below $1,000 million, A . leakages equal injections. B . leakages are greater than injections. C . leakages are less than injections. D . leakages are positive, but injections are negative. Answer : C Using saving/investment approach to equilibrium, the equilibrium condition the can be written as A . C + I = C + S. B . C = S + I. C . C ­ S = I. D . C + S = I. Answer : A Firms react to unplanned inventory reductions by A . reducing output. B . increasing output. C . reducing planned investment. D . increasing consumption. Answer : B Firms react to unplanned increases in inventories by A . reducing output. B . increasing output. C . increasing planned investment. D . increasing consumption. Answer : A Aggreg ate output will increase if there is a(n) A . increase in saving. B . unplanned rise in inventories. C . unplanned fall in inventories. D . decrease in consumption. Answer : C A decrease in planned investment causes A . output to increase. B . output to decrease, but by a smaller amount than the decrease in investment. C . output to decrease, but by a larger amount than the decrease in investment. D . output to decrease by an amount equal to the decrease in . investment. Answer : C (cz deltaY=Mult* deltaI) True/False 1) When expenditure is greater than aggregate output, there will be an unplanned build up of inventories. aggregate Answer: True F W Diff: 2 Answer: Skill: C True F A ment Diff: 2 equals c Skill: C t plann ued ainvest l ment plus i unpla nnned vchang ees in s invent t ories. Answer: True F W nomy Diff: 2 is in h Skill: D eequili nbrium , t savin hgs eequals plann eed cinvest oment. Answer: True F Diff: 2 Skill: C If gate expenditure decreases, then equilibrium output increases. aggre A n s w e r: True F T . Diff: 2 Skill: C 8.3 The Mul tip lie r Mul tip le Cho ice elasticity coefficient. . multiplier. C . automatic stabilizer. D . marginal propensity of the autonomous variable. Answer : B Refer to the information provided in Figure 8.10 below to answer the questions that follow. Figure 8.10 Refer Figure 8.10. The equation for the aggregate expenditure function AE0 to is A . AE0 = 50 + .6Y. B . AE0 = 80 + .6Y. C . AE0 = 50 + .75Y. D . AE0 = 50 + .4Y. Answer : C Refer to Figure 8.10. The value of the multiplier is A . 2. B . 2.5. C . 3. D . 4. Answer : D (maybe AE and C have same slope so mult=1/mps.=1/ (1­0.75)) Refer Figure 8.10. A $10 million increase in investment changes equilibrium to output to A . $240 million. B . $90 million. C . $225 million. D . $175 million. (maybe deltaY=40 .. deltaY=final­in=f­200=40) Answer : A Refer to Figure 8.10. A $20 million decrease in autonomous consumption A . changes equilibrium expenditure to $120 million. B . changes equilibrium output to $120 million. C . does not affect the MPC. D . All of the above Answer : D (Y=50­ 20+.75Y => Y=120 ..) Refer to Figure 8.10. If MPC increases to 0.8, equilibrium aggregate output A . increases to $250 million. B . remains at $200 million. C . increases to $400 million. D . cannot be determined from the given information. Answer : A Assumi government or foreign sector, if the MPC is .8, the multiplier is ng no A . .2. B . .8. C . 1.25. D . 5. Answer : D Assumi ng no government or foreign sector, the formula for the multiplier is A . 1/MPC. B . 1/MPS. C . 1/(1 + MPC). D . 1 ­ MPC. Answer : B Assumi there is no government or foreign sector, the formula for the ng multiplier is A . 1/(1 ­ MPC). B . 1/MPC. C . 1/(1 + MPC). D . 1 ­ MPC. Answer : A Assumi there is no government or foreign sector, if the multiplier is 4, the ng MPC is A . 0.75. B . 0.8. C . 0.6. D . 2.5. Answer : A Assume is no government or foreign sector. If the MPS is .2, the multiplier there is A . 2. B . 5. C . 9. D . 4. Answer : B Assume government or foreign sector. If the multiplier is 5, a $10 billion there increase in planned investment will cause aggregate output to increase is no by A . $2.5 billion. B . $10 billion. C . $40 billion. D . $50 billion. Answer : D Assume government or foreign sector. If the MPS is .2, a $20 billion decrease there in planned investment will cause aggregate output to decrease by is no A . $200 billion. B . $20 billion. C . $100 billion. D . $4 billion. Answer : C Assume government or foreign sector. If the multiplier is 5, a $20 billion there increase in investment will cause aggregate output to increase by is no A . $5 billion. B . $10 billion. C . $50 billion. D . $100 billion. Answer : D Refer to the information provided in Figure 8.11 below to answer the questions that follow. Figure 8.11 Refer to Figure 8.11. What is the equation for aggregate expenditure AE1? A . AE1 = 1,000 + .5Y. B . AE1 = 600 + .4Y. C . AE1 = 1,000 + .6Y. D . AE1 = 400 + .4Y. Answer : B Refer Figure 8.11. Suppose AE1, AE2 and AE3 are parallel. What is the value to of Point B? A . $750 million B . $800 million C . $900 million D . Cannot be determined from the given information. Answer : C (TRICKY!!!! At 1500 Y=AE!! =1500 so 0.4=B­1500/0­ 1500) Refer Figure 8.11. Suppose AE1, AE2 and AE3 are parallel. What is the value to of Point A? A . $450 million B . $540 million C . $510 million D . Cannot be determined from the given information. Answer : A MEMO!!! Refer 8.11. Suppose the economy's aggregate expenditure line is AE1. A $10 to million increase in planned investment causes aggregate equilibrium Figure output to increase to A . $1,016.7 million. B . $1,010 million. C . $1,125.5 million. D . $1,215.6 million. Answer : A (redo: eq is at Y=1000. deltaY=deltaI* 1/(1­0.6) deltaY=16.66. so delta=f­I …) As the MPS decreases, the multiplier will A . increase. B . decrease. C . remain constant. D . either or decrease depending on the size of the change in investment. increase Answer : A Midwes t State Univer sity in Nebraska is trying to convince Nebraska taxpayers that the tax dollars spent at Midwest State University are well spent. One of the university's arguments is that for every $1 spent(deltaS) by Midwest State University an additional $5 of expenditures are generated (deltaY) within Nebraska. Midwest State University is arguing that the multiplier for their expenditures is A . 0.2. B . 1. C . 4. D . 5. Answer : D ( If autonomous consumption increases, the size of the multiplier would A . increase. B . decrease. C . remain constant. D . either or decrease depending on the size of the change in autonomous increase consumption. Answer : C In practice, the actual size of the multiplier is about A . 1. B . 1.4. C . 2. D . 4. Answer : B According to the "paradox of thrift," as individuals increase their saving, A . income in the economy increases because there is more money available for firms to invest. B . income in the economy increases because interest rates will fall and the economy will expand. C . income in the economy will remain constant because the change in consumption equals the change in saving. D . income economy will fall because the decreased consumption that results in the from increased saving causes the economy to contract. Answer : D Accord the "paradox of thrift," increased efforts to save will cause a(n) ing to A . increase in income and an increase in overall saving. B . increase in income but no overall change in saving. C . decrease in income and an overall decrease in saving. D . decrease in income but an increase in saving. Answer : C True/False 1) The larger the MPC, the smaller the multiplier. Answer: True F Diff: 2 Skill: F The smaller the MPS, the larger the multiplier. A ns we r: True F I MPC Diff: 2 is .75, f Skill: F then t the hmulti eplier is 4. Answer: True F A ease Diff: 2 in the n Skill: F MPC, i reduc nes the cmulti r plier. Answer: True F T Diff: 2 Answer: Skill: C True F Diff: 2 Skill: C ...
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This note was uploaded on 04/06/2012 for the course BUSINESS CS204, Eco taught by Professor Mr during the Spring '12 term at American University of Beirut.

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