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Assume Alice’s preferences satisfy the axioms of the expected utility theorem. A risky assetyields $8 utility in a bull market, while it yields $3 utility or $0 utility with equal probability in abear market. The probabilities of a bull or a bear market are the same (i.e., 50%). What is Alice’sexpected utility from the risky asset?[Write your answer as a number with a maximum of two decimals, lik

Question

Assume Alice’s preferences satisfy the axioms of the expected utility theorem. A risky assetyields 8utilityinabullmarket,whileityields8 utility in a bull market, while it yields 3 utility or $0 utility with equal probability in abear market. The probabilities of a bull or a bear market are the same (i.e., 50%). What is Alice’sexpected utility from the risky asset?[Write your answer as a number with a maximum of two decimals, lik

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Solution

The expected utility from the risky asset can be calculated by multiplying the utility of each outcome by its probability and then summing these products.

In a bull market, the utility is $8 and the probability is 50% (or 0.5). So, the expected utility from a bull market is 8 * 0.5 = 4.

In a bear market, the utility can be either 3or3 or 0, each with equal probability. So, the expected utility in a bear market is (3 * 0.5 + 0 * 0.5) = 1.5.

Therefore, Alice's expected utility from the risky asset is the sum of the expected utilities from the bull and bear markets, which is 4 + 1.5 = 5.5.

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