Wherever relevant set up the appropriate hypotheses, show the applicable calculations, and fully interpret all results and conclusions in addition to any other questions that may be relevant.

7) An experiment was conducted to determine if exposure to an advertisement would change attitude toward a product. Each subject's attitude before and after exposure to the advertisement was recorded, using a valid ten point scale. The results indicated:

Subject Attitude Post Exposure Attitude Pre Exposure

1 6 4

2 8 5

3 6 6

4 4 3

5 7 2

6 6 3

7 9 6

8 7 6

9 8 5

10 8 6

A.Set up hypotheses and test to determine if the mean attitude toward the product increased as a result of exposure to the advertisement. (Note:these samples must be regarded as dependent, as each subject served as both a control (pre-exposure) and a treatment (post exposure).

B. Fully interpret your result.