For a repeated measures study comparing two treatments with n 15 scores in each treatment, the data produce t 1 78 If the mean difference is in the direction that is predicted by the researcher, then which of the following is the correct decision for a hypothesis test with 05 a Reject H0 for a one tailed test but not for two tailed b Reject H0 for a two tailed test but not for one tailed c Reject H0 for either a one tailed test or a two tailed test d Fail to reject H0 for both a one tailed test and a two tailed test

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Question: For a repeated-measures study comparing two treatments with n = 15 scores in each treatment, the data produce t = 1.78. If the mean difference

For a repeated-measures study comparing two treatments with n = 15 scores in each treatment, the data produce t = 1.78. If the mean difference is in the direction that is predicted by the researcher, then which of the following is the correct decision for a hypothesis test with α = .05?

a. Reject H0 for a one-tailed test but not for two-tailed.

b. Reject H0 for a two-tailed test but not for one-tailed.

c. Reject H0 for either a one-tailed test or a two-tailed test.

d. Fail to reject H0 for both a one-tailed test and a two-tailed test.

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