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  3. 1. presume that the following data were collected

1. Presume that the following data were collected from respondents to a poll asking for their...

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Statistics

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:

      H0:

      H1:

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

MSB:                  

MSW:                  

F:                       

df:             ,       

Fcrit:                   

3). What is your conclusion regardingH0?    (Circle one):   RETAIN     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?

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