Answer :
The following information is given
vN - M utility function : U(x) = log (x)
W = $500,000
Probability of loss = 0.2
Loss (d) = $200,000
Price of insurance = $r
(a). Suppose the price of insurance, r = 0.25. The probability of 0.8 that no loss occurs and probability 0.2 that loss of $200,000 occur and consumer left with $ 300,000 in case of loss
The consumer's expected utility is,
E (U) = 0.8U ($500,000) + 0.2U ($300,000)
= 0.8 log ($500,000) + 0.21 log($300,000)
= 0.8(13.1224) + 0.2(12.61154)
= 10.4979 + 2.5223
= 13.0202
Thus, the expected utility of consumer is 13.0202.
Now, suppose that y be the insurance consumer willing to buy. Compute the amount paid by consumer,
E(U) = U(500,000 - y)
= log(500,000 - y)
13.0202 = log(500,000 - y)
500,000 - y = antilog (13.0202)
y = 500,000 - 451,441.0136
= $48,558.9864
Hence, the consumer is willing to buy $48,558.9864 of insurance
(b). Suppose the insurance company acts like a monopolist, that is aims at maximizing profits. In such case, monopolist charge rx from consumer. When consumer's loss is $200,000, the amount charge by monopolist is ,
Amount charge by monopolist = rx
= 0.25 * 200,000
= $50,000
Hence, the amount charged by monopolist is $50,000
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