Subject Mathematics Decision Theory

Question

1. Prepare a payoff table and develop a decision tree.
2. Based on the calculated EMVs for all decision alternatives, answer the question: "Should Bill build a duplex, a quadplex, or do nothing"
3. Apply software tools for the decision tree (recommended tool: MS Excel Add-Ins TreePlan).

Bill Holliday is not sure what she should do. He can either build a quadplex (i.e., a building with four apartments), build a duplex, gather additional information, or simply do nothing. If he gathers additional information, the results could be either favorable or unfavorable, but it would cost him $3,000 to gather the information. Bill believes that there is a 50-50 chance that the information will be favorable. If the rental market is favorable, Bill will earn $15,000 with the quadplex or $5,000 with the duplex. Bill doesn't have the financial resources to do both. With an unfavorable rental market, however, Bill could lose $20,000 with the quadplex or $10,000 with the duplex. Without gathering additional information, Bill estimates that the probability of a favorable rental market is 0.7. A favorable report from the study would increase the probability of a favorable rental market to 0.9. Furthermore, an unfavorable report from the additional information would decrease the probability of a favorable rental market to 0.4. Of course, Bill could forget all of these numbers and do nothing. What is your advice to Bill?

Solution Preview

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Decision Tree Questions

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