Engineers are testing company fleet vehicle fuel economy (milesper gallon) performance by using different types of fuel. Onevehicle of each size is tested. Does this sample provide sufficientevidence to conclude that there is a significant difference intreatment means?
| 87 Octane | 89 Octane | 91 Octane | Ethanol 5% | Ethanol 10% |
| Compact | 30.8 | 28.4 | 17.7 | 30.7 | 31.1 |
| Mid-Size | 17.0 | 19.9 | 20.1 | 17.1 | 31.4 |
| Full-Size | 28.9 | 29.0 | 20.4 | 27.0 | 31.3 |
| SUV | 21.9 | 22.8 | 19.5 | 18.7 | 29.6 |
|
(b) Fill in the boxes. (Round your SSvalues to 3 decimal places, F values to 2 decimal places,and other answers to 4 decimal places.)
| Two-Factor ANOVA |
| Source | SS | df | MS | F | p-value |
| Treatments (Fuel Type) | | | | | |
| Blocks (Vehicle Size) | | | | | |
| Error | | | | | |
| Total | | | | | |
|
| Group | Mean | n | Std. Dev |
| 87 Octane | | | |
| 89 Octane | | | |
| 91 Octane | | | |
| Ethanol 5% | | | |
| Ethanol 10% | | | |
| | | |
| Compact | | | |
| Mid-Size | | | |
| Full-Size | | | |
| SUV | | | |
| Total | | | |
|
