3.8 Utility Theory
We have focused on the EMV criterion for making decisions under risk. However, there are many occasions in which people make decisions that would appear to be inconsistent with the EMV criterion. When people buy insurance, the amount of the premium is greater than the expected payout to them from the insurance company because the premium includes the expected payout, the overhead cost, and the profit for the insurance company. A person involved in a lawsuit may choose to settle out of court rather than go to trial even if the expected value of going to trial is greater than the proposed settlement. A person buys a lottery ticket even though the expected return is negative. Casino games of all types have negative expected returns ...
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