For each exercise, perform 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.

The data show the amounts (in thousands of dollars) of the contracts for soft drinks in randomly selected local school districts. At α = 0.10, can it be concluded that there is a difference in the averages? Use the P-value method. Give a reason why the result would be of concern to a cafeteria manager.

Transcribed Image Text:

Pepsi 46 120 80 500 100 59 Coca-Cola 420 285 57