Suppose a study reports that the average price for a gallon of self-serve regular unleaded gasoline is
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Suppose a study reports that the average price for a gallon of self-serve regular unleaded gasoline is $3.76.You believe that the figure 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.
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 ofsignificance.
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Related Book For
Business Statistics For Contemporary Decision Making
ISBN: 978-1118749647
8th edition
Authors: Black Ken
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