Question: Cho and Abe (2013) provided a commentary on the appropriate use of one-tailed and two-tailed tests in behavioral research. In their discussion, they outlined the

Cho and Abe (2013) provided a commentary on the appropriate use of one-tailed and two-tailed tests in behavioral research. In their discussion, they outlined the following hypothetical null and alternative hypotheses to test a research hypothesis that males self disclose more than females:

H0: μmales − μfemales ≤ 0

H1: μmales − μfemales > 0

(a) What type of test is set up with these hypotheses, a directional test or a nondirectional test?

(b) Do these hypotheses encompass all possibilities for the population mean? Explain.

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