The agencies generally consider markets in which the HHI is between 1,500 and 2,500 points to be moderately concentrated, and consider markets in which the HHI is in excess of 2,500 points to be highly concentrated. What would the Herfindahl-Hirschman Index (HHI) be in each of the following situations? 10 firms, each with 10 percent of the market 4 firms, each with 25 percent of the market 2 firms, each with 50 percent of the market 1 firm with a monopoly in the market

The agencies generally consider markets in which the HHI is between 1,500 and 2,500 points to be moderately concentrated, and consider markets in which the HHI is in excess of 2,500 points to be highly concentrated. What would the Herfindahl-Hirschman Index (HHI) be in each of the following situations? 10 firms, each with 10 percent of the market 4 firms, each with 25 percent of the market 2 firms, each with 50 percent of the market 1 firm with a monopoly in the market

Exploring Economics

8th Edition

ISBN:9781544336329

Author:Robert L. Sexton

Publisher:Robert L. Sexton

Chapter15: Oligopoly And Strategic Behavior

Section: Chapter Questions

Problem 9P

See similar textbooks

Similar questions

Suppose that the most popular car dealer in your area sells 2.5 percent of all vehicles. Enter as a whole number.If all other car dealers sell either the same number of vehicles or fewer, what is the largest value that the Herfindahl index could possibly take for car dealers in your area? (Please note that $625 is not the correct answer)$____
Suppose we have two markets, A and B, each consisting of seven firms. The market shares of the 5 largest firms (ordered by market share) are shown in the table below. True or false? (i) The CR3 and CR4 concentration ratios both point to the same market (either A or B) having more market power. (ii) The 6th largest firm in market B captures at most 8 percent of the market. (iii) The HHI of market B is at most 1,798 (in units of squared percent). (Hint: for positive x and y, (x+y)2=x2+y2+2xy≥x2+y2.) (iv) The HHI of market A is definitely larger than the HHI of market B.
A market is dominated by five firms, each with an equal share of market sales. What is the Herfindahl-Hirschman Index for this market?
You are the manager in a market composed of 20 firms, each of which has a 5.00 percent market share. In addition, each firm has a strong financial position and is located within a 100-mile radius of its competitors. a. Calculate the premerger Herfindahl-Hirschman index (HHI) for this market? b. Suppose that any two of these firms merge. What is the postmerger HHI? c. Based only on the information contained in this question and on the U.S. Department of Justice Horizontal Merger Guidelines described in this chapter, do you think the Justice Department would attempt to block a merger between any two of the firms?multiple choice It may but will also consider other factors. It likely will not. It likely will.
Consider a market with four firms. Suppose the first firm has a 39% market share, the second firm has a 30% market share, the third firm has a 20% market share, and the fourth firm has a 11% market share. Using the Herfindahl-Hirschman Index (HHI), what is this market's level of concentration? Now suppose the third and fourth firms propose to merge. Were they to merge, then the market's HHI would increase to? Given the increase in the HHI that would be caused by the proposed merger, would the government likely allow such a merger to occur?
Suppose that there are 8 firms in a market, 3 firms produce 90% of the goods (each produces 30%) and 5 small firms produce the remaining 10% of the output (each produces 2%) (1) What is the value of the Herfindahl-Hirshman index in this market? Please show all your calculation. Points will be deducted if there is only a number without middle steps. Hint: it would be a number between 0 and 1. (2) A market is considered as "concentrated" if its HHI is greater than 0.18 and "highly concentrated" if HHI is greater than 0.25. Based on your calculation in the last question, what would you say about the market?
Not long ago, the Federal Communications Commission (FCC) implemented “local number portability” rules allowing cellular phone consumers to switch cellular providers within the same geographic area and maintain the same phone number. How would you expect this change to affect the Rothschild index for the cellular service industry?
Based only on the knowledge that the premerger market share of two firms proposing to merge was 30 percent each, an economist working for the Justice Department was able to determine that, if approved, the postmerger HHI would increase by 1,800. How was the economist able to draw this conclusion without knowledge of the other firms’ market shares? From this information, can you devise a general rule explaining how the Herfindahl-Hirschman index is affected when exactly two firms in the market merge?
You are the manager in a market composed of eight firms, each of which has a 12.5 percent market share. In addition, each firm has a strong financial position and is located within a 100-mile radius of its competitors. a. Calculate the premerger Herfindahl-Hirschman index (HHI) for this market. b. Suppose that any two of these firms merge. What is the postmerger HHI?
An industry is composed of Firm 1, which controls 70 percent of the market, Firm 2 with 15 percent of the market, and Firm 3 with 5 percent of the market. About 20 firms of approximately equal size divide the remaining 10 percent of the market. Calculate the Herfindahl-Hirschman Index before and after the merger of Firm 2 and Firm 3 (assume that the combined market share after the merger is 20 percent). Would you view a merger of Firm 2 with Firm 3 as procompetitive or anticompetitive? Explain.
Forey, Inc., competes against many other firms in a highly competitive industry. Over the last decade, several firms have entered this industry and, as a consequence, Forey is earning a reLurn on investment that roughly equals the interest rate. Furthermore, the four-firm concentration ratio and the Herfindahl-Hirschman index are both quite small, but the Rothschild index is significantly greater than zero. Based on this information, which market structure best characterizes the industry in which Forey competes? Explain.
BK Books is an online book retailer that also has 10,000 “bricks and mortar”outlets worldwide. You are a risk-neutral manager within the CorporateFinance Division and are in dire need of a new financial analyst. You only interview students from the top MBA programs in your area. Thanks to your screening mechanisms and contacts, the students you interview ultimately differ only with respect to the wage that they are willing to accept. About 10 percent of acceptable candidates are willing to accept a salary of $140,000, while 90 percent demand a salary of $190,000. There are two phases to the interview process that every interviewee must go through. Phase 1 is the initial one-hour on-campus interview. All candidates interviewed in Phase 1 are also invited to Phase 2 of the interview, which consists of a five-hour office visit. In all, you spend six hours interviewing each candidate and value this time at $2,500. In addition, it costs a total of $8,000 in travel expenses to interview each…