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Statistics - Testing Hypothesis (Mean)

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The accompanying table shows the grades for three randomly selected samples of students in economics, statistics, and accounting classes. Test the hypothesis that the mean grades are the same for all three classes. Use .05 for the level of significance. Economics(X1 ) Statistics(X2 ) Accounting(X3 ) 80 100 95 90 90 90 70 90 88 100 75 82 60 95 85 100 60 80 60

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The solution tests the hypothesis that the mean grades are the same for all three classes. The classes are economics, statistics and accounting.

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