Suppose thata small town has seven burger shops whose respective shares of the local hamburger market are (as percentages of all hamburgers sold): 26 percent, 24 percent, 20 percent, 12 percent, 9 percent, 6 percent, and 3 percent. Instructions: Enter your answers as a whole number. a. What is the four-firm concentration ratio of the hamburger industry in this town? percent b. What is the Herfindahl index for the hamburger industry in this town? c. If the top three sellers combine to form a single firm, what would happen to the four-firm concentration ratio and to the Herfindahl index? Four-firm concentration ratio = percent Herfindahl index =

Suppose thata small town has seven burger shops whose respective shares of the local hamburger market are (as percentages of all hamburgers sold): 26 percent, 24 percent, 20 percent, 12 percent, 9 percent, 6 percent, and 3 percent. Instructions: Enter your answers as a whole number. a. What is the four-firm concentration ratio of the hamburger industry in this town? percent b. What is the Herfindahl index for the hamburger industry in this town? c. If the top three sellers combine to form a single firm, what would happen to the four-firm concentration ratio and to the Herfindahl index? Four-firm concentration ratio = percent Herfindahl index =

Survey Of Economics

10th Edition

ISBN:9781337111522

Author:Tucker, Irvin B.

Publisher:Tucker, Irvin B.

Chapter9: Monopolistic Competition And Oligoply

Section: Chapter Questions

Problem 11SQP

See similar textbooks

Similar questions

Is it true that the four-firm concentration ratio puts more emphasis on one or two very large films, while the Herfindahl-Hirshmau Index puts more emphasis on all the films in the entire market? Explain briefly.
For many years, the Justice Department has tried to break up large firms like IBM, Microsoft, and most recently Google, on the grounds that their large market share made them essentially monopolies. In a global market, where U.S. films compete with firms from other countries, would this policy make the same sense as it might in a purely domestic context?
Consider the curve in the figure below, which shows the market demand. marginal cost, and marginal revenue curve for firms in an oligopolistic industry. In this example, we assume firms have zero fixed costs. Suppose the firms collude to form a cartel. What price will the cartel charge? What quantity will the cartel supply? How much profit will the cartel earn? Suppose now that the cane] breaks up and the oligopolistic firms compete as vigorously as possible by cutting the price and increasing sales. What will be the industry quantity and price? What will be the collective profits of all firms in the industry? Compare the equilibrium price, quantity, and profit for the cartel and cutthroat competition outcomes.
How do we measure a four-firm concentration ratio? What does a high measure mean about the extent of competition?
When OPEC raised the price of oil dramatically in the mid-1970s, experts said it was unlikely that the cartel could stay together over the long term-that the incentives for individual members. to cheat would become too strong. More than fort),r years later, OPEC still exists. Why do you think OPEC has been able to beat the odds and continue to collude? Hint: You may wish to consider non-economic reasons.