Utility Functions and Risk Aversion Quiz

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Questions and Answers

How is Henrique categorized based on his utility function?

  • Always indifferent
  • Risk neutral
  • Risk loving
  • Risk averse (correct)

What describes Juliano's attitude towards risk based on his marginal utility of income?

  • Risk loving
  • Indifferent to risk
  • Risk averse (correct)
  • Risk neutral

What is the correct outcome for Mike when offered the bet from Adam?

  • Accept the bet only if I is high enough (correct)
  • Reject the bet, independently of I
  • Reject the bet only if I is high enough
  • Accept the bet, independently of I

If Mike has a constant marginal utility of income, what can be inferred about his risk preference?

<p>He is risk neutral (A)</p> Signup and view all the answers

In the context of utility from income, what does risk averse imply about a consumer's behavior towards uncertain outcomes?

<p>They have a higher preference for guaranteed outcomes over risky ones (A)</p> Signup and view all the answers

When a consumer is described as risk loving, how does this impact their acceptance of bets?

<p>They will accept bets with high potential returns regardless of their current income (A)</p> Signup and view all the answers

If both Henrique and Juliano are risk averse, what can be concluded about their utility functions?

<p>Both functions increase at a decreasing rate (C)</p> Signup and view all the answers

How is the concept of marginal utility relevant to understanding consumer risk preferences?

<p>It helps in assessing how utility changes with variations in income (A)</p> Signup and view all the answers

What is the interest rate paid by the USC Credit Union savings account?

<p>1% per month (A)</p> Signup and view all the answers

If Jim invests all his money in option A, what is Jim’s utility function?

<p>u(I) = I (D)</p> Signup and view all the answers

What is the probability that the Los Angeles Panthers will lose the championship game?

<p>25% (A)</p> Signup and view all the answers

What is the income Pedro Carroll would have if the Seahawks win after betting all his money?

<p>$400 (C)</p> Signup and view all the answers

What income does Pedro Carroll keep if he chooses not to bet?

<p>$169 (D)</p> Signup and view all the answers

Which minimum winning prize would make Cam willing to bet all his money on the Seahawks if they win?

<p>$72 (C)</p> Signup and view all the answers

If Pedro bets on the Seahawks and they lose, what amount will he have left?

<p>$0 (C)</p> Signup and view all the answers

What is the form of the production cost function for the firm aiming to maximize expected profit?

<p>C = 2q^2 (D)</p> Signup and view all the answers

What is the expected utility for Investment A for Niobe?

<p>5.5 (C)</p> Signup and view all the answers

Which investment option has the highest expected utility for Dione?

<p>Investment B with 462 (B)</p> Signup and view all the answers

What is the expected value of Jim's investment option 1 if he buys shares of ACME?

<p>$107.5 (C)</p> Signup and view all the answers

What is the expected return percentage for Jim's investment option 2 with shares of Tabajara?

<p>17.5% (C)</p> Signup and view all the answers

If Jim's investment in the savings account has a 1% return, what is the expected value?

<p>$101 (B)</p> Signup and view all the answers

Among the investment options Jim has, which one represents the lowest expected value?

<p>Savings account (C)</p> Signup and view all the answers

Which expected utility calculation uses the formula 0.6 × (3 × 162) + 0.4 × (3 × 12)?

<p>Investment B for Dione (B)</p> Signup and view all the answers

What is the main reason Niobe prefers investment option B over A?

<p>Higher expected utility (B)</p> Signup and view all the answers

Which investment option yields the highest expected utility for Jim?

<p>Investment option 1 (ACME) (A)</p> Signup and view all the answers

What is the expected utility of investment option 2 (Tabajara)?

<p>10.00 (C)</p> Signup and view all the answers

What is the probability P such that the expected utility from the risky option equals the risk-free option?

<p>0.65 (B)</p> Signup and view all the answers

Which formula represents the expected utility from the risk-free option (holding cash)?

<p>E[uRF] = 169 (B)</p> Signup and view all the answers

What is the expected utility of the risk-free option calculated as E[uRF]?

<p>13 (A)</p> Signup and view all the answers

What does Iwin equal when both the risky option and risk-free option yield the same expected utility?

<p>$64 (C)</p> Signup and view all the answers

Which option is considered too risky for Jim despite having the highest expected value?

<p>Investment option 2 (Tabajara) (D)</p> Signup and view all the answers

If the expected profit is given by the formula pq − 2q^2, what role does quantity q play in this profit model?

<p>Directly affects the profit through multiplication (A)</p> Signup and view all the answers

What is the maximum amount the consumer is willing to pay for insurance based on the expected utility calculations?

<p>$234,375 (C), $45,675 (D)</p> Signup and view all the answers

What is the expected loss calculated for the scenario where the consumer faces a potential loss of $158,400?

<p>$39,600 (B)</p> Signup and view all the answers

How is the risk premium (RP) calculated in the given scenarios?

<p>RP = Maximum Willingness to Pay - Fair Insurance Premium (A)</p> Signup and view all the answers

In the case where the consumer buys partial insurance, what will be the consumer's payment in the event of a crash?

<p>$3,174 (C)</p> Signup and view all the answers

What is the expected utility without insurance (E[uN I]) for one of the calculations provided?

<p>7,000 (D)</p> Signup and view all the answers

How much does the consumer receive back if he loses his money under the partial insurance?

<p>$2,044 (D)</p> Signup and view all the answers

What is the fair insurance premium related to the expected loss of a house value from $1,000,000 to $250,000?

<p>$187,500 (D)</p> Signup and view all the answers

What was the method used to determine the indifference point between purchasing insurance or not?

<p>Setting the expected utilities with and without insurance equal (D)</p> Signup and view all the answers

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Study Notes

Utility Functions and Risk Aversion

  • Risk Averse individuals prefer a certain outcome to a gamble with the same expected value. Their utility function is concave down, meaning the marginal utility of income decreases as income increases.
  • Risk Neutral individuals are indifferent between a certain outcome and a gamble with the same expected value. Their utility function is linear.
  • Risk Loving individuals prefer a gamble with the same expected value to a certain outcome. Their utility function is concave up, meaning the marginal utility of income increases as income increases.

Problem 1: Henrique and Juliano

  • Henrique has a concave down utility function, indicating risk aversion.
  • Juliano has a linear utility function, indicating risk neutrality.

Problem 2: Mike

  • Mike has a constant marginal utility of income, meaning his utility function is linear. This indicates risk neutrality.

Problem 3: Pedro Carroll

  • Pedro faces a choice between a risk-free option (keeping his current income) and a risky option (betting on the Seahawks winning).
  • Pedro's utility function is linear, indicating risk neutrality.
  • To determine the minimum winning probability P for Pedro to bet, set the expected utility of the risky option equal to the expected utility of the risk-free option:
    • E[uR] = E[uRF]
    • 20P = 13
    • P = 0.65 or 65%

Problem 4: Cam

  • Cam faces a choice between a risk-free option (keeping his current income) and a risky option (betting on the Panthers winning).
  • To determine the minimum winning prize Iwin for Cam to bet, set the expected utility of the risky option equal to the expected utility of the risk-free option:
    • E[uR] = E[uRF]
    • 0.75 × Iwin = 6
    • Iwin = 8
    • Iwin = $64

Problem 5: The Firm's Production Decision

  • The firm faces uncertainty about the price p of its product.
  • The firm's profit is pq - 2q^2.
  • To maximize expected profit, the firm chooses the quantity q that maximizes the expected value of its profit function.
  • In this case, the optimal quantity is q = 5*, and the expected profit is $50.

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