For Exercises perform the following steps. Assume that all variables are normally distributed.

a. State the hypotheses and identify the claim.
b. Find the critical value.
c. Compute the test value.
d. Make the decision.
e. Summarize the results.
Use the traditional method of hypothesis testing unless otherwise specified.

A random sample of daily high temperatures in January and February is listed. At α = 0.05, can it be concluded that there is a difference in variances in high temperature between the two months?

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Jan. 31 31 38 24 24 42 22 43 35 42 Feb. 31 29 24 30 28 24 27 34 27