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Suppose that a decision maker faced with four decision alternatives and four states of nature develops the following profit payoff table:

          Decision Alternative       s1                s2                s3                s4

          d1                                   14               9                 10               5

          d2                                   11               10               8                 7

          d3                                   9                 10               10               11

          d4                                    8                 10               11               13

a.       If the decision maker knows nothing about the probabilities of the four states of nature, what is the recommended decision using the optimistic, conservative, and minimax regret approaches?

b.       Which approach do you prefer?  Explain.  Is establishing the most appropriate approach before analyzing the problem important for the decision maker?  Explain.     

c.       Assume that the payoff table provides cost rather than profit payoffs.  What is the recommended decision using the optimistic, conservative, and minimax regret approaches?

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