The Tennessee Department of Transportation (TDOT) is considering six mutually exclusive projects to reduce number of accidents on state highways. Effectiveness is often considered as a good measure any safety programs on state highways and it may be defined based on the accident reduction and highway miles traveled. A consulting firm has complied the following cost and effectiveness for all six plans.
| Plan | PW of costs | Effectiveness |
| 1 | $ 3.0 M | 5 |
| 2 | 4.5M | 12 |
| 3 | 8.2M | 14 |
| 4 | 9.6M | 17 |
| 5 | 12.0M | 21 |
| 6 | 15.0M | 25 |
If weights of 0.6 and 0.4 are assigned to PW of costs and effectiveness respectively, determine the plan TDOT should implement.
