At a given significance level, a one-tailed test:

A. has a higher critical value than does a two-tailed test.
B. is less accurate than a two-tailed test.
C. is less likely to detect real differences between means than is a two-tailed test.
D. is more likely to detect real differences between means than is a two-tailed test, given that the correct tail was selected for the test.


Answer: D

Psychology

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