Question

In: Operations Management

Suppose that a car-rental agency offers insurance for a week that costs $100. A minor fender...

Suppose that a car-rental agency offers insurance for a week that costs $100. A minor fender bender will cost $3,500, whereas a major accident might cost $16,000 in repairs. Without the insurance, you would be personally liable for any damages. What should you do? Clearly, there are two decision alternatives: take the insurance, or do not take the insurance. The uncertain consequences, or events that might occur, are that you would not be involved in an accident, that you would be involved in a fender bender, or that you would be involved in a major accident. Develop a payoff table for this situation. What decision should you make using each of the following strategies?
a) aggressive strategy
b) conservative strategy
c) opportunity-loss strategy

Solutions

Expert Solution

(a)

Aggressive strategy (Maximax)

Take maximum possible payoff for each alternative. Then select the alternative which shows the maximum of payoff out of these maxima.

Payoff matrix States of nature Max
Alternatives No accident Minor accident Major accident payoff
Take insurance -100 -100 -100 -100
Don't take insurance 0 -3,500 -16,000 0

Note that the payoffs have been written as negative of costs.

So, based on the aggressive strategy, the best decision is to not to buy the insurance.

(b)

Conservative strategy (Maximin)

Take minimum possible payoff for each alternative. Then select the alternative which shows the maximum of payoff out of these minima.

Payoff matrix States of nature Min
Alternatives No accident Minor accident Major accident payoff
Take insurance -100 -100 -100 -100
Don't take insurance 0 -3,500 -16,000 -16,000

So, based on the conservative strategy, the best decision is to buy the insurance.

(c)

Opportunity-loss strategy (Minimax Regret)

First, develop the regret matrix by subtracting each payoff from the corresponding column maxima.

Regret matrix States of nature
Alternatives No accident Minor accident Major accident
Take insurance 100 0 0
Don't take insurance 0 3,400 15,900

Then take maximum possible regrets for each alternative and select the alternative which shows the minimum of regrets out of these maxima.

Regret matrix States of nature Max
Alternatives No accident Minor accident Major accident regret
Take insurance 100 0 0 100
Don't take insurance 0 3,400 15,900 15,900

So, based on the opportunity-loss strategy, the best decision is to buy the insurance.


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