Most individuals are aware of the fact that the average annual repair cost for an automobile depends on the age of the a
Posted: Wed May 11, 2022 6:51 am
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
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