answer a & b, provide formulas on how you came to answer. provide step by step answers so I can understand

4.4 The Gorman Manufacturing Company must decide whether to purchase a component part from a supplier or to manufacture the component at its own plant. If demand is high, it would be to Gorman's advantage to manufacture the component. If demand is low, however, Gorman's unit manufacturing cost will be high because of underutilization of equipment. The projected profit in thousands of dollars for Gorman's make-or-buy: decision is as follows. a. Determine the best decisions using the maximax, maximin, and opportunity loss decision criteria. b. Assume that the probability of low demand is 0.35, of medium demand is 0.35, and of high demand is 0.30. What is the best decision using the expected value criterion and what is the expected value of perfect information