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Using a = 0.05, test for a difference in the means. group         n        mean       sample std...

Using a = 0.05, test for a difference in the means.
group         n        mean       sample std dev
1                20       8.3                 3.0
2               20       7.2                  3.0
ttest u1 = u2 ( VS NE) t= 1.16

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