An Paired-Samples T-Test Is Used to Test For

question 20

Multiple Choice

An paired-samples t-test is used to test for:

• A)Differences between means of groups containing different entities when the sampling distribution is normally distributed, and the data have equal variances and are at least interval.
• B)Differences between means of groups containing the same entities when the sampling distribution is normally distributed, and the data have equal variances and are at least interval.
• C)Differences between means of groups containing different entities when the sampling distribution is not normally distributed.
• D)Differences between means of groups containing the same entities when the sampling distribution is not normally distributed and the data do not have unequal variances.

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