I need help with part c, on sensitivity analysis.

A concessions manager at the Tech versus A\&M football game must decide whether to have the vendors sell sun visors or umbrellas. There is a 30% chance of rain, a 15% chance of overcast skies, and a 55% chance of sunshine, according to the weather forecast in College Junction, where the game is to be held. The manager estimates that the following profits will result from each decision, given each set of weather conditions: C) Also, suppose probability of cast is 0 . Probability of rain is p, probability of subshine is 1-p. Practice sensitivity analysis. a. Compute the expected value for each decision and select the best one. b. Develop the opportunity loss table and compute the expected opportunity loss for each decision