12 For the following which type of ttest is required a Study

12.

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. (c) The study described in part (b), but with the added requirement that for each man of a particular age, there is a woman of the same age.

Solution

a) Looks like a paired t-test (same subjects are used in a \"before and after\" scenario).
b) Looks like an independent groups t-test (different subjects)
c) Looks like a matched pairs t-test (matched based on characteristics like age).