Question

QUESTION 52-Conceptual Set 1. A researcher wants to study exercise as a way of reducing anger expression. He plans to throw water balloons at participants, measure their anger using behavioral cues (e.g., number of swear words, redness of face, etc.), make them do 20 pushups, then measure their anger again. He wants to see if there are differences before and after 20 pushups. Which t-test should he use?

QUESTION 53-Conceptual Set 1. Why should he (the researcher from question 52) use that test?

A. Because single sample t-tests compare a sample mean to a population mean, which is what the researcher is attempting to do

B. Because single sample t-tests compare scores before and after an event, which is what the researcher is attempting to do

C.Because single sample t-tests compare two completely different groups in a sample, which is what the researcher is attempting to do

D. Because paired samples t-tests compare a sample mean to a population mean, which is what the researcher is attempting to do

E. Because paired samples t-tests compare scores before and after an event, which is what the researcher is attempting to do

F.Because paired samples t-tests compare two completely different groups in a sample, which is what the researcher is attempting to do

G.Because independent sample t-tests compare a sample mean to a population mean, which is what the researcher is attempting to do

H. Because independent sample t-tests compare scores before and after an event, which is what the researcher is attempting to do

I. Because independent sample t-tests compare two completely different groups in a sample, which is what the researcher is attempting to do

Answer 1

Answer:

E. Because paired samples t-tests compare scores before and after an event, which is what the researcher is attempting to do.