- Suppose the National Transportation Safety Board (NTSB) wantsto examine the safety of compact cars, midsize cars, and full-sizecars. It collects a sample of three for each of the treatments(cars types). Using the data provided below, test whether the meanpressure applied to the driver’s head during a crash test is equalfor each types of car. Use α = 5%.
Compact cars | Midsize cars | Full-size cars |
64 | 46 | 47 |
65 | 43 | 45 |
69 | 52 | 40 |
Average: 66 | Average: 47 | Average: 44 |
               The average for all can be found as 52.3.
            a). Find SSG.
            b). Find SSE.
            c). Find SST
            d). Find F-value
           e). Find F-critical value from the Table.
           f). Make your decision.
