Question. The manager of a computer software company wishes to study the number of hours senior executives by type of industry spend at their desktop computers. The manager selected a sample of five executives from each of three industries. At the .05 significance level, can she conclude there is a difference in the mean number of hours spent per Week by industry?
| Banking |
Retail |
Insurance |
| 12 |
8 |
10 |
| 10 |
8 |
8 |
| 10 |
6 |
6 |
| 12 |
8 |
8 |
| 10 |
10 |
10 |