stats hw 2 recent

# stats hw 2 recent - Josh Spiro ECO 260 HW#2 Page 193...

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Josh Spiro ECO 260 HW #2 Page 193, Exercise #51 Crosstabulation Table Household Income (\$1000s) Educaton Level Under 25 25.0-49.9 50.0-74.9 75.0-99.9 100 or more Total Not H.S. Graduate 9,285 4,093 1,589 541 354 15,862 H.S. Graduate 10,150 9,821 6,050 2,737 2,028 30,786 Some College 6,011 8,221 5,813 3,215 3,210 26,380 Bachelor's Degree 2,138 3,985 3,952 2,698 4,748 17,521 Beyond Bach. Deg. 813 1,497 1,815 1,589 3,765 9,479 Total 28,397 27,617 19,219 10,780 14,015 100,028 Joint Probablity Table Household Income (\$1000s) Educaton Level Under 25 25.0-49.9 50.0-74.9 75.0-99.9 100 or more Total Not H.S. Graduate 0.585 0.258 0.100 0.034 0.022 1.000 H.S. Graduate 0.640 0.619 0.381 0.173 0.128 1.941 Some College 0.379 0.518 0.366 0.203 0.202 1.663 Bachelor's Degree 0.135 0.251 0.249 0.170 0.299 1.105 Beyond Bach. Deg. 0.051 0.094 0.114 0.100 0.237 0.598 Total 1.790 1.741 1.212 0.680 0.884 6.306 education \$100,000 or more. less than \$25,000. Page 195, Exercise #57 Event A lost-time accident in current year Event B lost-time accident in previous year P(B)= 0.06 P(A)= 0.05 P(A|B)= 0.15 a. 0.01 1% of the employees will suffer at least one lost-time accident over a two-year period b. A U B 0.1 10% of the employees will experience lost-time in accidents in both years Page 195, Exercise #59 Geographic Studies P(high-qualtiy oil) = 0.50 P(medium-quality oil) = 0.20 P(no oil) = 0.30 Total 1.00 a. 0.50+0.20 = 0.70 or 70.0% probablity of finding oil b. 0.159 = 15.9% probablitly of a head of household not being a H.S. graduate.

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• Spring '08
• staff
• Probability, Probability theory, H.S. Graduate, Municipal Municipal Municipal Municipal Municipal Municipal Municipal Municipal Municipal Municipal Municipal Municipal Municipal Municipal Municipal Municipal, Table Household Income

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stats hw 2 recent - Josh Spiro ECO 260 HW#2 Page 193...

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