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7. Most individuals are aware of the fact that the average annual repair cost for an auto- mobile depends on the age of the automobile. A researcher is interested in finding out whether the variance of the annual repair costs also increases with the age of the auto- mobile. A sample of 26 automobiles 4 years old showed a sample standard deviation for annual repair costs of $170 and a sample of 25 automobiles 2 years old showed a sample standard deviation for annual repair costs of $100. State the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles. b. At a .01 level of significance, what is your conclusion? What is the p-value? Discuss the reasonableness of your findings. a.

7. Most individuals are aware of the fact that the average annual repair cost for an auto- mobile depends on the age of the automobile. A researcher is interested in finding out whether the variance of the annual repair costs also increases with the age of the auto- mobile. A sample of 26 automobiles 4 years old showed a sample standard deviation for annual repair costs of $170 and a sample of 25 automobiles 2 years old showed a sample standard deviation for annual repair costs of $100. State the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles. b. At a .01 level of significance, what is your conclusion? What is the p-value? Discuss the reasonableness of your findings. a.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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7. Most individuals are aware of the fact that the average annual repair cost for an auto- mobile depends on the age of the automobile. A researcher is interested in finding out whether the variance of the annual repair costs also increases with the age of the auto- mobile. A sample of 26 automobiles 4 years old showed a sample standard deviation for annual repair costs of $170 and a sample of 25 automobiles 2 years old showed a sample standard deviation for annual repair costs of $100. State the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles. b. At a .01 level of significance, what is your conclusion? What is the p-value? Discuss the reasonableness of your findings. a.
Transcribed Image Text:7. Most individuals are aware of the fact that the average annual repair cost for an auto- mobile depends on the age of the automobile. A researcher is interested in finding out whether the variance of the annual repair costs also increases with the age of the auto- mobile. A sample of 26 automobiles 4 years old showed a sample standard deviation for annual repair costs of $170 and a sample of 25 automobiles 2 years old showed a sample standard deviation for annual repair costs of $100. State the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles. b. At a .01 level of significance, what is your conclusion? What is the p-value? Discuss the reasonableness of your findings. a.
a. State the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles. b. At a .01 level of significance, what is your conclusion? What is the p-value? Discuss the reasonableness of your findings.
Transcribed Image Text:a. State the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles. b. At a .01 level of significance, what is your conclusion? What is the p-value? Discuss the reasonableness of your findings.
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