The article “Heavy Drinking and Problems Among Wine Drinkers” (Journal of Studies on Alcohol [1999]: 467–471) analyzed drinking problems among Canadians. For each of several different groups of drinkers, the mean and standard deviation of “highest number of drinks consumed” were calculated:

Assume that each of the seven samples studied can be viewed as a random sample for the respective group. Is there sufficient evidence to conclude that the mean value of highest number of drinks consumed is not the same for all seven groups?

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Beer only Wine only Spirits only Beer and wine Beer and spirits Wine and spirits Beer, wine, and spirits X 7.52 2.69 5.51 5.39 9.16 4.03 6.75 S n 6.41 1256 2.66 1107 6.44 759 4.07 7.38 3.03 5.49 1334 1039 1057 2151