Use the following data set for Exercises 21-26.
| 0.6 | 1 | 10 | 1.3 |
| 4.0 | 2 | 10 | −3.2 |
| 3.2 | 3 | 8 | −1.0 |
| 9.0 | 4 | 8 | 0.9 |
| 1.8 | 5 | 6 | −2.5 |
| 8.4 | 6 | 6 | 0.9 |
| 9.8 | 7 | 4 | 1.0 |
| 10.4 | 8 | 4 | 2.0 |
| 8.8 | 9 | 2 | 0.2 |
| 14.7 | 10 | 2 | −2.2 |
21. Perform the multiple regression of on , , and , and write the multiple regression equation.
13.3.21