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 11 metropolitan areas across the upper Midwest region (OhioGasPrices.com website, March 18, 2012)?

Use α = .05 to test for any significant difference in the mean price of gasoline for the three brands?

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Metropolitan Area Shell Akron, Ohio Cincinnati, Ohio Cleveland, Ohio Columbus, Ohio Ft. Wavne, Indiana Indianapolis. Indiana Lansing, Michigan Lexington, Kentucky Louisville, Kentuckv Muncie, Indiana Toledo, Ohio 3.77 3.72 3.87 3.76 3.83 3.85 3.93 3.79 3.78 3.81 3.69 BP 3.83 3.83 3.85 3.77 3.84 3.84 4.04 3.78 3.84 3.84 3.83 Marathon 3.78 3.87 3.89 3.79 3.87 3.87 3.99 3.79 3.79 3.86 3.86