STATISTICS
Instructions: Read each of the following problems, then decide what procedure to follow to properly complete the problem.
1. Independent random samples of two models of power lawn mower yielded the following data on number of years until major breakdown.
Brand1 |
Brand2 |
2.3 |
1.9 |
3.7 |
3.8 |
5.9 |
6.4 |
6.8 |
5.6 |
3.5 |
4.9 |
Do the data suggest that the mean times until major breakdown differ for the two models? Use a = 0.05. (Assume the two populations have the same shape.)