Question

1. Presume that the following data were collected from respondents to a poll asking for their rating of the current state of the economy, ranging from 1 to 100 (1= worst, 100 = best).

	Party affiliation
	Republican	Independent	Democrat
M	45	41	31
s	9.1	8.7	10.3
n	15	13	19

1). State your hypotheses for the effect of party affiliation:

      H₀:

      H₁:

2). Test your hypothesis using a one-way ANOVA. Show all your work andenter your information in the appropriate boxes:

MS_B:                  

MS_W:                  

F:                       

df:               ,       

F_crit:                   

3). What is your conclusion regarding H₀?    (Circle one):    RETAIN     REJECT

4). What is your conclusion regarding the research hypothesis?

2. In an ANOVA, what do “within-groups variability” and “between-groups variability” mean?

3. Describe how the F-distribution is different than the t-distribution. There is at least one feature that they share in common, however (and the z-distribution does not have this feature). What is it?

Answer 1