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5. An independent-measures research study uses n = 15 participants in one group and n = 12 participants in a second group to compare two

5. An independent-measures research study uses n = 15 participants in one group and n = 12 participants in a second group to compare two treatment conditions. What is the df value for the t statistic computed for the corresponding hypothesis test? a. df = 27 b. df = 24 C. df = 25 d. df = 26

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