11. A physician purchases a particular vaccine on Monday of each week. The vaccine must be used within the week following, otherwise it becomes worthless. The vaccine costs Rs 20 per dose and the physician charges Rs 60 per dose. In the past 50 weeks, the physician has administered the vaccine in the following quantities:

(a) Draw up a paY-offmatrix,

(b) Obtain a regret matrix,

(

c) Determine the optimum number of doses the physician should buy,

(

d) The maximum amount the physician would be willing to pay per week for a perfect information about the number of doses expected to be demanded in a week.

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Doses per week : 20 25 40 60 No. of weeks : 5 15 25 5