You are on the game show “Deal or No Deal!” and have made it almost until the end. You are left with four suitcases. One of them holds $1,000,000, one of them holds $50,000, one of them holds $10,000, and the other holds $1. Assume your payoff is one of these four amounts in equal probability. What is the expected payoff? The banker is offering you a fixed sum in exchange for the four suitcases. If your utility of the random prize W is equal to U(W)=W^(2/3) what is the minimum amount you would accept from the banker? Why is this less than the expected payoff?
Statement showing expected payoff
Winning | Probability | Expected winnings |
A | B | A x B |
1000000 | 25% | 250000 |
50000 | 25% | 12500 |
10000 | 25% | 2500 |
1 | 25% | 0.25 |
Expected payoff | 265000.25 |
Thus Expected payoff = $ 265000.25
If utility function = U(W)=W^(2/3)
Thus minimum amount to be demanded = Expected payoff2/3
= 265000.252/3
= 4125.70$
Minimum amount is less than expected payoff because the risk of not winning is being transfered to bank . Thus bank will now bear risk of getting $ 1.
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