Question 2 Suppose a study reports that the average price for a gallon of self-s

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Question 2                

                    Suppose a study reports that the average price for a gallon of self-serve regular unleaded gasoline is                

                    $3.16. You believe that the ?gure is higher in your area of the country. You decide to test this claim                

                    for your part of the United States by randomly calling gasoline stations. Your random survey of 25                

                    stations produces the following prices (all in $). Assume gasoline prices for a region are normally                

                    distributed. Do the data you obtained provide enough evidence to reject the claim? Use a 1% level of                

                    significance.

                    3.27 3.29 3.16 3.20 3.37                

                    3.20 3.23 3.19 3.20 3.24                

                    3.16 3.07 3.27 3.09 3.35                

                    3.15 3.23 3.14 3.05 3.35                

                    3.21 3.14 3.14 3.07 3.10

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