Suppose a study reports that the average price for 1 L of self serve regular unleaded gas is $1.37. You believe that the figure is higher in your area of the country. You decide to test this claim for your part of Canada by randomly calling gas stations. Your random survey of 25 stations produces the following prices.Assume gas 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.

Transcribed Image Text:

$1.40 1.38 1.37 1.36 1.38 $1.41 1.39 1.34 1.39 1.36 $1.37 1.38 1.40 1.36 1.36 $1.38 1.38 1.34 1.33 1.34 $1.44 1.39 1.43 1.43 1.35