SPSS

  

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 = 10, the first ten students who entered a housing commons area who agreed to participate. Attitudes about the university are measured with a short questionnaire, both before and after viewing the commercial. Attitudes were on a scale of 0 – 20, which higher numbers reflecting better attitudes. Use the provided data to examine whether the commercial improved the university’s image. 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