Use the Wilcoxon matched-pairs signedranks test to test the given hypotheses at the = 0.05 level

Question:

Use the Wilcoxon matched-pairs signedranks test to test the given hypotheses at the α = 0.05 level of significance. The dependent samples were obtained randomly.
1. Hypotheses: H0: MD = 0 versus H1: MD > 0 with n = 12 and T- = -16.
2. Hypotheses: H0: MD = 0 versus H1: MD > 0 with n = 20 and T- = -65.
3. Hypotheses: H0: MD = 0 versus H1: MD < 0 with n = 15 and T+ = 33.

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