1.Fifty students participated in a study that evaluates the efficacy of five different types of messages (coded A, B, C, D, and E) about the negative consequences of drinking heavily. The researcherrandomly assigned 10 studentsto each five types of messages (groups). Each participant of a group receives an article about the health consequence of drinking heavily and rated the accuracy of the information presented. Below are the mean accuracy rating (ranging from 1 to 20) given to the different types of messages:

Types of Messages Rating

A19

B13

C17

D9

E10

Suppose that you perform aone-way analysis of variance,and as illustrated in the Table of variance presented below, the within-Types-of-Messages mean square (MS) is 94, whereas the MS for between-Types-of-Messages mean square is 188.