For each of the following studies using difference scores, test the significance using a t test for dependent means. #of diff scores means S2 for each tails significance level
(a) 10 3.8 50 One (high) .05
(b) 100 3.8 50 One (high) .05
(c) 100 1.9 50 One (high) .05
(d) 100 1.9 50 Two .05
(e) 100 1.9 25 Two .05
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