A one-tailed test should be used only if you can specify the direction of an effect before conducting your experiment.

Name: A one-tailed test should be used only if you can specify the direction of an effect before conducting your experiment.
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Question

Quizplus · Accepted Answer

A one-tailed test is appropriate when the research hypothesis predicts the direction of the effect, allowing for more statistical power in detecting an effect in that specified direction.

A One-Tailed Test Should Be Used Only If You Can