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
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
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