Equipment and data. Shawn, of Exercises 27, 29, and 31, could obtain long-range predictions of the growing conditions for next summer. He thinks that those might show a probability of good growing conditions as low as 50% or as high as 80%. If he doesn’t obtain those predictions, he’ll make a decision based on his previous estimates

(see Exercise 31).

a) Draw the decision tree.

b) If Shawn thinks there’s a 60% chance the long-range predictions will predict a 50% chance of good conditions, find the corresponding EVwSI.

c) Should Shawn purchase the long-range predictions?