Which Statement Is Only True for the T Test for Dependent

question 20

Multiple Choice

Which statement is only true for the t test for dependent means rather than t tests in general?

• A)Population variances are estimated from the information in the sample of scores actually studied.
• B)Pretest-posttest experimental designs are common.
• C)The population means are unknown.
• D)The sample scores (in some form)are compared to a t distribution.

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