Car and Taxi Ages When the author visited Dublin, Ireland (home of Guinness Brewery employee William Gosset, who first developed the t distribution), he recorded the ages of randomly selected passenger cars and randomly selected taxis. The ages can be found from the license plates. (There is no end to the fun of traveling with the author.) The ages (in years) are listed below. We might expect that taxis would be newer, so test the claim that the mean age of cars is greater than the mean age of taxis.
Car and Taxi Ages When the author visited Dublin, Ireland (home of Guinness Brewery employee William Gosset, who first developed the t distribution), he recorded the ages of randomly selected passenger cars and randomly selected taxis. The ages can be found from the license plates. (There is no end to the fun of traveling with the author.) The ages (in years) are listed below. We might expect that taxis would be newer, so test the claim that the mean age of cars is greater than the mean age of taxis.
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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18. Car and Taxi Ages When the author visited Dublin, Ireland (home of Guinness Brewery
employee William Gosset, who first developed the t distribution), he recorded the ages of randomly
selected passenger cars and randomly selected taxis. The ages can be found from the
license plates. (There is no end to the fun of traveling with the author.) The ages (in years) are
listed below. We might expect that taxis would be newer, so test the claim that the mean age of
cars is greater than the mean age of taxis.
Transcribed Image Text:XI 18. Car and Taxi Ages When the author visited Dublin, Ireland (home of Guinness Brewery
employee William Gosset, who first developed the t distribution), he recorded the ages of ran-
domly selected passenger cars and randomly selected taxis. The ages can be found from the
license plates. (There is no end to the fun of traveling with the author.) The ages (in years) are
listed below. We might expect that taxis would be newer, so test the claim that the mean age of
cars is greater than the mean age of taxis.
Car Ages 4 0 8 11 14 3 4 4 3 5 833 7 4 6 6182 15 11 4 1618
Taxi Ages 8 80 384336 11 7 7 695 10 8 4 3 4
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