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 $170 and a sample of
25 automobiles 2 years old showed a sample standard deviation for
annual repair costs of $100. Identify the alternative
hypothesis?
Ha: \sigma_1^2>\sigma_2^2
Ha: \sigma_1^2 ≥ sigma_2^2
Ha: \sigma_1^2 ≤ sigma_2^2
None of the above
The p-value is
a) 0.05
b) 0.01
c) 0.0056
d) 0.99
The test statistic F equals 2.89
a) True
b) False
We get evidence against the alternative hypothesis
a) True
b) False
Most individuals are aware of the fact that the average annual repair cost for an automobile depends on the age of the a
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answerhappygod
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Most individuals are aware of the fact that the average annual repair cost for an automobile depends on the age of the a
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