For these exercises, perform each of these steps. Assume that all variables are normally or approximately normally

Question:

For these exercises, perform each of these steps. Assume that all variables are normally or approximately normally distributed.
a. State the hypotheses and identify the claim.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results.
Use the traditional method of hypothesis testing unless otherwise specified and assume the variances are unequal.

A random sample of monthly gasoline prices was taken from 2005 and from 2011. The samples are shown. Using α = 0.01, can it be concluded that gasoline cost less in 2005? Use the P-value method.