2.  A major university would like to improve its tarnished image following a large on-campus scandal.  Its marketing department develops a short television commercial and tests it on a sample of n = 7 subjects.  People's attitudes about the university are measured with a short questionnaire both before and after viewing the commercial.  The data are as follows: Person        X1 (Before)       X2 (After) A                     15                                15 B                     11                                13 C                     10                                18 D                     11                                12 E                      14                                16 F                      10                                10 G                     11                                19 H                     10                                20 I                       12                                13 J                      15                                18 (b) Conduct a hypothesis test (showing all the steps) to determine if the university should spend money to air the commercial (i.e., did the commercial improve the attitudes?) Assume an alpha level = 0.05.  You may use SPSS but not required.(a) Is this a within-subjects or a matched samples design?  Explain your answer.

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2.  A major university would like to improve its tarnished image following a large on-campus scandal.  Its marketing department develops a short television commercial and tests it on a sample of n = 7 subjects.  People's attitudes about the university are measured with a short questionnaire both before and after viewing the commercial.  The data are as follows:

Person        X1 (Before)       X2 (After)

A                     15                                15

B                     11                                13

C                     10                                18

D                     11                                12

E                      14                                16

F                      10                                10

G                     11                                19

H                     10                                20

I                       12                                13

J                      15                                18


(b) Conduct a hypothesis test (showing all the steps) to determine if the university should spend money to air the commercial (i.e., did the commercial improve the attitudes?) Assume an alpha level = 0.05.  You may use SPSS but not required.(a) Is this a within-subjects or a matched samples design?  Explain your answer.

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