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Principles of Microeconomics

Stevenson, Betsey;Wolfers, Justin

Chapter 18

Game Theory and Strategic Choices - all with Video Answers

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Chapter Questions

Problem 1

Think about a situation you've experienced lately where you've made a decision based both on your best interest and on the decisions of others. Use the interdependence principle to explain how your best choice was dependent on what others chose.

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Problem 2

In 2018 the United States and China engaged in a trade war where each country was imposing trade tariffs on goods imported from the other country. The Trump administration announced in June of that year that the United States would "soon" begin imposing tariffs on $$\$ 50$$ billion worth of goods imported from China. China quickly responded by announcing tariffs on agricultural products, automobiles, and other products imported from the United States. President Trump then countered by threatening additional tariffs on another $$\$ 200$$ billion worth of Chinese goods. China responded with a statement that said it would respond to any such measures in kind. Briefly explain how this is an example of a Prisoner's Dilemma.

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Problem 3

Your instructor challenges you to solve this classic economics thought experiment called the stag hunt: Suppose you and a hunting partner are hunting for food to feed your families in a post-apocalyptic world with no stores, farms, or trade. You lay a trap for a deer that will provide a large number of calories for your two families to continue to survive. While waiting, you both spot a hare running through the trap. If you chase after the hare, you'll catch it but you will scare any wildlife in the area and you won't catch the deer you were waiting for. The hare only provides a small amount of calories for your own family and none for your partner's family. Would you chase after the hare or keep waiting for the stag?

Create a payoff matrix that illustrates this example. You can use whatever values you want as long as they align with the outcomes described above. Use the four steps and the check mark method to determine the best possible responses for you and your partner. Which would you choose and why?

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05:28

Problem 4

The Walt Disney Company and Universal Studios are both considering building a new theme park in Texas. They each have two viable options for the new location: Dallas or San Antonio. The expected profits are provided in the following payoff table:
a. If Disney and Universal make this decision simultaneously, what would the Nash equilibrium be for this game?
b. Explain, using decision trees, why it is in Disney's best interest to build first.

Manasvee Singh
Manasvee Singh
Numerade Educator
06:00

Problem 5

In 2014, the Bridgestone tire corporation admitted guilt in a justice department pricefixing case that involved 26 suppliers of auto parts including Toyo Tires. Bridgestone, Toyo Tires, and other auto parts suppliers colluded in order to charge higher prices, and thus earn higher profits. Bridgestone alone was fined $\$ 425$ million for their part in the price-fixing conspiracy. Consider the following payoff table:
a. If Bridgestone and Toyo are setting prices for one period only, what will the Nash equilibrium be? Briefly explain your reasoning.
b. If, instead, Bridgestone and Toyo play this game over and over, how could they find a way to cooperate with each other? Use a payoff table to help illustrate your answer.

Heather Duong
Heather Duong
Numerade Educator