Table 3. Test of the mean difference in flights with large aircraft based on discount rate
| Discount 0%-10% | Discount 10%-20% | Discount 0%-20% |
| Null hypothesis | μ20%=μ210% | μ210%=μ220% | μ20%=μ220% |
| Test statistic F (df=22) | -1.1989 | -1.9186 | -4.2303 |
| p-value | 0.243>0.05 | 0.068>0.05 | 0.0003438<0.05 |
| Decision | μ20%=μ210% | μ210%=μ220% | μ20%≠μ220% |