For the following which type of t-test is requireda, Ask an Expert

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For the following, which type of t-test is required?

(a) Studying the effects of a memory drug on Alzheimer's patients, testing a group of patients before and after administration of the drug.

(b) Studying whether men and women rate the persuasiveness of an argument delivered by a female speaker differently.

(b), but with the added requirement that for each man of a particular age, there is a woman of the same age.

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