Using a repeated measures design, Researcher A computes the following test stati

Question

Using a repeated measures design, Researcher A computes the following test statistic, t(22) = 1.980, and decides to reject the null hypothesis. Using a matched samples design, Researcher B computes the same test statistic, t(22) = 1.980, but decides to retain the null hypothesis. Which of the follow can explain why this occurred?

(a) The repeated measure design is a more powerful design than the matched samples design

(b) Researcher A computed a one-tailed test; Researcher B computed a two-tailed test

(c) Researcher A used a .05 level of significance; Researcher B used a .10 level of significance

Explanation / Answer

Answer is B &C both

Option D must with there.. i.e both B & C

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