In Exercises 9–14, assume that samples of differences are obtained through dependent sampling and follow a normal distribution. Calculate and .
13.
| Subject | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|
| Sample 1 | 0 | 0.5 | 0.75 | 1.25 | 1.9 | 2.5 | 3.2 | 3.3 |
| Sample 2 | 0.25 | 0.25 | 0.75 | 1.5 | 1.8 | 2.2 | 3.3 | 3.4 |
10.1.13