Several volunteers engage in a special exercise program intended to lower their blood pressure. We measure each person's initial blood pressure, lead them through the exercises daily for a month, then check blood pressures again. To see if the program lowered blood pressure significantly we should do a A) matched pairs t-test B) ç² test of homogeneity C) 2-sample t-test D) linear regression t-test E) ç² goodness-of-fit test

Question

Quizplus · Accepted Answer

A matched pairs t-test is appropriate because we are measuring each person's blood pressure before and after the exercise program, and we are testing whether there is a significant difference between the two measurements. This type of test is appropriate when dealing with dependent/paired samples.

Several Volunteers Engage in a Special Exercise Program Intended to Lower