ECON
Econ 41 - Final Sheet (32-35)

# Econ 41 - Final Sheet (32-35) - 32 Suppose we have...

• Notes
• 1

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 32. Suppose we have information on the monthly inn-I: mi the monthly rents paid by a sample of families. In the regression of My lady) on the monthly incomdx) for these data (y=a+bx+u), the vahleuf a will repesent: [email protected] the point where the regression line intersects the yﬂis b. the point where the regression line intersccts the x—axis c. an increase in the monthly rent paid by a Emily (beta a 51 increase in income d. an increase of the income of a family due to a 31 human in the monthly rent paid 6. none of the above 33. Assume we study the relationship between Y, expenditure of households, and X, the total income of household (in thousands). The my data are: n:10, the mean ofx is 35, the mean ofy is 10, 2x? =10000, ny =1200 , and 2 x04- = 4500 . The ﬁtted least squares regression Hm: has slope equal to: Ul tots-10 3 a. 5/44 4 x b.11/88 , 55“ Icon = .__—— —. .._a— ._ ,ll . _ I‘ To“!!! 0‘3’ —: J®neoftheabove 55"” ' qsoo ' L3 .5? it ' ‘000 (never ncjﬂi‘v-m) so“) L 99m= mono - in = , ”go I o 34. Consider the following sample regression line: Testscore=698.9—2.28*absence . Variable, absence, is the total time a student is absent from lectures. You are asked to test the hypothesis: H0 :1) = 0 v.3. HI :1) :t 0 , where b is the slope of the regression model. You are also told that the t—statistic on the slope coefﬁcient is 4.38. What is the standard deviation of the slope coeﬁicient (round to hundredths): ® T. "/s.<:L= £4.35 £41.53 a. .52 ”2.2.51 = = 4.3.8 0. 0.27 gab :5 052; d. The information given is not sufﬁcient todo the calculation e. None of the above. 35. In the context of the previous question, if a student reduces his/her absence time from 10 to 5, what is the expected change in his/her testscore: J @mrease by 5*2.28 b. decrease by 5*228 0. increase by 698.9+5*2.28 /d./ decrease by 698.9—5*2.28 e. None of the above. ...
View Full Document

• Spring '07
• Guggenberger

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern