Question

People were asked to rate a company before and after one week of reviewing the company...

People were asked to rate a company before and after one week of reviewing the company performance. The data is given in the following table

After

Before

39

32

15

11

35

21

13

17

41

30

39

38

22

14

Use an alpha of 0.05 to test whether there is a significant increase in the rating of the company after one week reviewing (rating of before is less than after). Assume that differences in ratings are normally distributed in the population.

Knowing that

D=-5.857 and SD=6.0945

Math   Statistics-And-Probability   
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