What conditions are necessary in order to use the dependent samples f-test for t

Question

What conditions are necessary in order to use the dependent samples f-test for the mean of the difference of two populations? Choose the correct answer below. Each sample must be randomly selected from a normal population and each member of the first sample must be paired with a member of the second sample. Each sample must be randomly selected from any population and each member of the first sample must be paired with a member of the second sample. Each sample must be randomly selected from any population and the two samples must be independent. Each sample must be randomly selected from a normal population and the two samples must be independent.

Explanation / Answer

Answer is A.

A dependent t-test is an example of a "within-subjects" or "repeated-measures" statistical test. This indicates that the same participants are tested more than once. Thus, in the dependent t-test, "related groups" indicates that the same participants are present in both groups.

The selections should come from the normal population.

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