A payoff table is given as

	S1	S2	S3
D1	250	750	500
D2	300	-250	1200
D3	500	500	600
Requested:
a. What choice should be made by the optimistic decision maker?
b. What choice should be made by the conservative decision maker?
c. What decision should be made under minimal regret?
d. If the probabilities of d1, d2, and d3 are .2, .5, and .3, respectively, then what choice should be made under expected value?