With economical concerns being so great, many people are no longer purchasing new vehicles, but are instead keeping their vehicles for a longer period of time, until they no longer work. The American Automobile Association is interested in determining if the average age of vehicles for Americans is different than six years. A random sample of 35 Americans was obtained. The aver- age age of their vehicles was 6.2 years with standard deviation 1.2. a. Set up the null and alternative hypothesis: b. At the 1% significance level, use a CI to determine if the average age of yehicles for Americans

With economical concerns being so great, many people are no longer purchasing new vehicles, but are instead keeping their vehicles for a longer period of time, until they no longer work. The American Automobile Association is interested in determining if the average age of vehicles for Americans is different than six years. A random sample of 35 Americans was obtained. The aver- age age of their vehicles was 6.2 years with standard deviation 1.2. a. Set up the null and alternative hypothesis: b. At the 1% significance level, use a CI to determine if the average age of yehicles for Americans

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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