In a study of the role of young drivers in automobile accidents,data on the percentage of licensed drivers under the age of 21 andthe number of fatal accidents per 1000 licenses were determined for32 cities. The first column contains a number as city code, thesecond column contains the percentage of drivers who are under 21,and the third column contains the number of fatal accidents isdependent upon the proportion of licensed drivers that are under21.
Use 30 degrees of freedom, and alpha as 0.01 to get a criticalvalue of 1.697)
16. What is the margin of error for calculating a 90% intervalfor the slope of the true regression line? (i.e. 1.697 by thestandard deviation of the slope
17. What is the lower 90% confidence limit for the slope?
18. What is the upper 90% confidence limit of the slope?
19. What is the value of the test statistic for testing thishypothesis?
| 1 | 11 | 2.352 |
| 2 | 15 | 3.392 |
| 3 | 11 | 2.488 |
4 | 17 | 2.707 |
| 5 | 15 | 2.739 |
| 6 | 15 | 3.51 |
| 7 | 18 | 3.867 |
| 8 | 14 | 1.679 |
| 9 | 8 | 0.65 |
| 10 | 8 | 0.965 |
| 11 | 18 | 3.447 |
| 12 | 9 | 0.23 |
| 13 | 5 | 0 |
| 14 | 11 | 1.477 |
| 15 | 14 | 2.378 |
| 16 | 10 | 1.458 |
| 17 | 16 | 2.568 |
| 18 | 16 | 3.018 |
| 19 | 8 | 1.229 |
| 20 | 14 | 1.474 |
| 21 | 8 | 1.415 |
| 22 | 20 | 3.796 |
| 23 | 15 | 1.971 |
| 24 | 8 | 0.467 |
| 25 | 10 | 1.526 |
| 26 | 11 | 0.676 |
| 27 | 15 | 2.526 |
| 28 | 9 | 1.311 |
| 29 | 5 | 0.223 |
| 30 | 13 | 2.989 |
| 31 | 8 | 1.107 |
| 32 | 12 | 0.401 |
