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同济大学:《应用统计学》课程电子教案(课件讲稿)Chapter 9 Two-Sample Tests with Numerical Data

 Test hypotheses for the difference between two independent population means (standard deviations known or unknown)  Test two means from related samples for the mean difference  Complete a Z test for the difference between two proportions  Use the F table to find critical F values  Complete an F test for the difference between two variances
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