Sara has a utility function u=500-100/c, where c is her consumption in thousands of dollars. If Sarah becomes a clerk, she will make $30,000 per year for certain. If she becomes a pediatrician, she will make $60,000 if there is a baby boom and $20,000 if there is a baby bust. The probability of a baby boom is 75% and of a baby bust, 25%. A consulting firm has prepared demographic projections that indicate which event will occur. What is the most that she should be willing to pay for this information?
Her utility in case of a certain income is U = 500 - 100/30 = 496.67. Find her utility in case of baby boom
U(BB) = 500 - 100/60 = 498.33 and in case of baby bust U(BU) = 500 - 100/20 = 495
Find the expected utility EU = 0.75*498.33 + 0.25*495 = 497.5.
We see that at this utility her consumption should be
497.5 = 500 - 100/c
100/c = 2.5
c = 40000
Hence her income is increased by 40000 if she has a knowledge of the event. The most she can pay is therefore the difference of certain income and this income = 40000 - 30000 = 10000.
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