Mathematics, 07.07.2020 21:01 elenasoaita
Most individuals are aware of the fact that the average annual repair cost for an automobile 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 automobile. A sample of 26 automobiles 4 years old showed a sample standard deviation for annual repair costs of $120 and a sample of 23 automobiles 2 years old showed a sample standard deviation for annual repair costs of $100. Let 4 year old automobiles be represented by population 1.State the null and alternative versions of the research hypothesis that the variance in annual repair costs is larger for the older automobiles.
Answers: 3
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Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm
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Most individuals are aware of the fact that the average annual repair cost for an automobile depends...
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