=+a) For the advertising strategies of Exercise 21 and using the probability of 0.70 for rising consumer confidence, what is the Expected Value of Perfect Information (EVPI)?

b) What is the EVPI if the probability of rising consumer confidence is only 0.40?

24. Energy investment EVPI. For the energy investment of Exercise 22 and using both of the probabilities considered in that exercise, find the Expected Value of Perfect Information.

25. Advertising strategies with information. The company from Exercises 13, 21, and 23 has the option of hiring an economics consulting firm to predict consumer confidence. The company has already considered that the probability of rising consumer confidence could be as high as 0.70 or as low as 0.40. They could ask the consultants for their choice between those two probabilities, or they could just pick a probability in the middle, such as .50, and choose a strategy based on that.