A campaign manager wants to determine which of three campaign ads to run, so he creates three different ads and conducts an experiment. He randomly assigns participants to view one of the ads and rate the candidate on a 7-point scale ranging from 1(strongly dislike) to 7 (strongly like). Can the campaign manager be 95% confident that there is a difference in means between the three ads?

Ad 1 (Candidate Kissing Baby):

3,6,5,3,7,2,5

Ad 2 (Candidate Hunting in Woods):

4,4,1,2,2,3,2

Ad 3 (Candidate Walking in City):

4,3,5,1,4,5,3

Blank #1: Enter SS Total

Blank #2: Enter SS Within

Blank #3: Enter SS Between

Blank #4: Enter MS Within

Blank #5: Enter MS Between

Blank #6: Enter Calculated F-Score

Blank #7: Can the null hypothesis be rejected?

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A researcher decides to run a study in which she tests students before they begin college and after they finish college to see if they actually learn anything. She collects the data below. Test scores range from 0 to 10. Can the researcher be 95% confident that students improve from before college to after college?

Subject After

Before

A 2 6

B 9 10

C 5 9

D 5 8

E 1 10

F 6 6

G 2 5

Blank #1: Enter Standard Deviation

Blank #2: Enter Standard Error

Blank #3:Enter T-score

Blank #4: Can the null hypothesis be rejected?

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