1. Presume that the following data were collected fromrespondents to a poll asking for their rating of the current stateof 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 partyaffiliation:
Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ H0:
Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ H1:
2). Test your hypothesis using a one-way ANOVA. Show all yourwork andenter your information in the appropriate boxes:
MSB:Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚
MSW:Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚
F:Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚
df: Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ ,Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚
Fcrit:Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚ Ă‚
3). What is your conclusion regardingH0?Ă‚ Ă‚ Ă‚ (Circle one):Ă‚ Ă‚ Ă‚ RETAINĂ‚ Ă‚ Ă‚ Ă‚ REJECT
4). What is your conclusion regarding the researchhypothesis?
2. In an ANOVA, what do “within-groups variability” and“between-groups variability” mean?
3. Describe how the F-distribution is different than thet-distribution. There is at least one feature that they share incommon, however (and the z-distribution does not have thisfeature). What is it?
