Managerial Economics: Applications, Strategies and Tactics (MindTap Course List)
Managerial Economics: Applications, Strategies and Tactics (MindTap Course List)
14th Edition
ISBN: 9781305506381
Author: James R. McGuigan, R. Charles Moyer, Frederick H.deB. Harris
Publisher: Cengage Learning
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Chapter 16, Problem 3E

A.

To determine

To ascertain:Whether the antitrust division challenge a merger between firms D and C.

B.

To determine

To ascertain:Whether the antitrust division challenge a merger between firms F and G.

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An industry consists of three firms with sales of $300,000, $700,000, and $250,000. a. Calculate the Herfindahl-Hirschman index (HHI). b. Calculate the four-firm concentration ratio (C4). c. Based on the FTC and DOJ Horizontal Merger Guidelines described in the text, do you think the Department of Justice would attempt to block a horizontal merger between two firms with sales of $300,000 and $250,000? Explain.
Suppose that a small town has seven burger shops whose respective shares of the local hamburger market are (as percentages of all hamburgers sold): 22 percent, 22 percent, 18 percent, 11 percent, 10 percent, 9 percent, and 8 percent. The four-firm concentration ratio for the hamburger industry in this town is 73 percent. (Enter your response as a whole number.) The Herfindahl index for the hamburger industry in this town is 1658. (Enter your response as a whole number.) Suppose the top three sellers combined to form a single firm. The four-firm concentration ratio would be percent. (Enter your response as a whole number.)
You are a manager in a market composed of eight firms, each of which has a 12.5% market share. The premerger Herfindahl-Hirschman index (HHI) for this market equals If any two of these firms merge, the post-merger HHI equals Based on this information and the Horizontal Merger Guidelines described in this course, which of the following statements is true? A. A merger like this leads to an unconcentrated market and is typically permitted. B. A merger like this leads to a moderately concentrated market and potentially raises antitrust concerns. C. A merger like this leads to a highly concentrated market and potentially raises antitrust concerns. D. A merger like this leads to a highly concentrated market, is presumed to enhance market power, and will almost certainly be blocked. E. Other/None of the above/Not enough information provided. O
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