4 Each Following Studies Using Difference Scores Test Significance Using Ttest Dependent Mea

4. For each of the following studies using difference scores, test the significance using a ttest for dependent means. Number of Difference Scores in SampleMean of Difference Scores in SampleEstimated Population Variance of Difference ScoresTailsSignificance Level (a)201.78.291 (high predicted).05 (b)1642.3414.532.05 (c)15–2.24.001 (low predicted).01


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