Question

In: Operations Management

You are planning to rent a car for a one-week vacation. You have the option of...

You are planning to rent a car for a one-week vacation. You have the option of buying an insurance that costs $80 dollars for a week. If you do not purchase insurance, you would be personally liable for any damages. You anticipate that a minor collision will cost $2,000, whereas a major accident might cost $16,000 in repairs.

  1. Develop a payoff table for this situation. What decision should you make using each strategy?
  1. Aggressive (Optimistic)
  2. Conservative (Pessimistic)
  3. Opportunity Loss
  1. You have recently read in a magazine that that the probability of a major accident is 0.05% and that the probability of a minor collision is 0.16%. Construct a decision tree and identify the best expected value decision.

Solutions

Expert Solution

a. i) ii) iii)

For All three pessimistic, Optimistic and Opportunity loss decision criteria we can see buying insurance is the best decision.

Optimistic decision - chooses best of the best payoffs. Best payoff is the minimum payoff as we are dealing with payoff (cost)

Pessimistic decision - chooses best of the worst payoffs. Worst payoff is the maximum payoff as we are dealing with payoff (cost)

Payoff (cost)

Formula

Decision tree

Expected value at node 3 = Expected value (Do not buy insurance) = 0.05%*16000+0.16%*2000+99.79%*0 = 11.2
Expected value at node 2 = Expected value (Buy insurance) = 0.05%*80+0.16%*80+99.79%*80 = 80

So according to Decision tree and expected value decision, best decision is "Do not Buy insurance"


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