Given is a Decision Tree Diagram. The Payoffs 1-14 are given in the table below. Answer questions a, b, and c.   Payoff 1 2 3 4 5 6 7 8 9 10 11 12 13 14 $ 6 -3 5 5 8 5 5 -1 5 4 5 2 7 5   a) The value at node 4 is (        ) b) The value at node 8 is (         )  (in 1 decimal place)   c) The best course of action or decision is to select alternative (       )

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