Question: The data accompanying this exercise show miles per gallon (mpg) for 25 cars. a. State the null and the alternative hypotheses in order to test

The data accompanying this exercise show miles per gallon (mpg) for 25 cars.
a. State the null and the alternative hypotheses in order to test whether the variance differs from 62 mpg2.
b. Assuming that mpg are normally distributed, calculate the value of the test statistic.
c. Use Excel's function (CHISQ.DIST.RT or CHISQ.DIST) to calculate the p-value.
d. Make a conclusion at α = 0.01.

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