The price drivers pay for gasoline often varies a great deal across regions throughout the United States. The following data show the price per gallon for regular gasoline for a random sample of gasoline service stations for three major brands of gasoline (Shell, BP, and Marathon) located in eleven metropolitan areas across the upper Midwest region (OhioGasPrices. com website, March 18, 2012). Metropolitan Area Shell BP Marathon
Akron OH 3.77 3.83 3.78
Cincinnati, OH 3.72 3.83 3.87
Cleveland, OH 3.87 3.85 3.89
Columbus, OH 3.76 3.77 3.84
Ft. Wayne, IN 3.83 3.84 3.87
Indianapolis, IN 3.85 3.84 3.87
Lansing, MI 3.93 4.04 3.99
Lexington, KY 3.78 3.84 3.79
Louisville, KY 3.78 3.84 3.79
Muncie, IN 3.81 3.84 3.83
Toledo, OH 3.69 3.83 3.86
Use a significance level of 0.05 to test for any significant difference in the mean price of gasoline for the three brands. Round SS to 6 decimals, MS to 7 decimals, F to 2 decimals, and p to 3 decimals, if necessary.
Source DF SS MS F p
Metropolitan Area
Brand
Error
Total