Discussion:
Safety researchers, interested in determining whether the occupancy of a vehicle might be related to the speed at which the vehicle is driven, have observed the following speed (mph) measurements from two random samples of vehicles
a. What are the null and alternative hypotheses for this rest?
b. Use ANOVA and the 0.025 level of significance in resting the null hypothesis identified in part (a).
c. For each sample, construct he 95% confidence interval for the population mean.
| Alone |
WithPass |
| 64 |
44 |
| 50 |
52 |
| 71 |
54 |
| 55 |
48 |
| 67 |
69 |
| 61 |
67 |
| 80 |
54 |
| 56 |
57 |
| 59 |
58 |
| 74 |
51 |
|
62 |
|
67 |