Assume gasoline prices for a region are normally, Ask an Expert

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Suppose a study reports that the average price for gallon of self serve regular unloaded gasoline is $3.16. you believe that the figure is higher in your area of the country. you decided to test the claim for your part of the united states by randomly calling gasoline stations. your random survey of 25 produces the rolling prices.

$3.27, 3.20, 3.16, 3.15, 3.21, 3.20, 3.23, 3.07, .3.23, 3.14, 3.16, 3.19, 3.27, 3.14, 3.14, 3.20. 3.20, 3.09, 3.05, 3.07, 3.37, 3.24, 3.35, 3.35, 3.10

Assume gasoline prices for a region are normally distributed. do the data you obtain provide enough evidence to reject the claim? use 1% level of significance.

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