In: Statistics and Probability
A plant manager considers that operational cost per hour of five alternative machines. The cost per hour is sensitive to three potential weather conditions: cold, mild, and warm. The following table represents the operational cost per hour for each alternative-state of nature combination.
| Alternatives | Cold | Mild | Warm | 
| Machine 1 | 
 50  | 
40 | 45 | 
| Machine 2 | 45 | 42 | 47 | 
| Machine 3 | 40 | 35 | 54 | 
| Machine 4 | 60 | 25 | 48 | 
| Machine 5 | 45 | 40 | 45 | 
| Probability | 30% | 50% | 20% | 
The EVPI is .