A directional hypothesis test is also referred to as a one-tailed test.

Name: A directional hypothesis test is also referred to as a one-tailed test.
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A directional hypothesis test focuses on testing whether the population mean or proportion is either greater than or less than a specific value. This type of test involves a one-tailed rejection region in the direction of the alternative hypothesis. Therefore, a directional hypothesis test is also referred to as a one-tailed test.

A Directional Hypothesis Test Is Also Referred to as a One-Tailed