Microeconomics
13th Edition
ISBN: 9781337617406
Author: Roger A. Arnold
Publisher: Cengage Learning
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Question
Chapter 12.1, Problem 2ST
To determine
Determine the four-firm concentration ratio and Herfindahl index.
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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
(Enter your response as a whole number.)
Suppose that a small town has seven burger shops whose respective shares of the local hamburger market are (as percentages of all hamburgers sold): 18 percent, 24 percent, 20 percent,
11 percent, 10 percent, 9 percent, and 8 percent.
The four-firm concentration ratio for the hamburger industry in this town is
percent. (Enter your response as a whole number.)
The Herfindahl index for the hamburger industry in this town is
(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.)
Suppose the top three sellers combined to form a single firm.
The Herfindahl index would be
(Enter your response as a whole number.)
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.)
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- Suppose that the top six firms in an industry have total annual sales of $250 billion, $210 billion, $150 billion, $120 billion, $80 billion, and $60 billion, respectively. Instructions: Round your answers to the nearest whole number. a. What is the four-firm concentration ratio for this industry? percent b. What is the Herfindahl index for this industry? (Hint: To find the Herfindahl index, you will need to compute the percentage market share for each firm in the industry. When calculating market share, do not round your intermediate calculations.)arrow_forwardSuppose an industry consists of three firms. Two firms have sales of $10 each, and one firm has sales of $30. What is the Herfindahl-Hirschman index for this industry? What is the four-firm concentration ratio?arrow_forwardSuppose that the six firms in industry A have annual sales of 40, 35, 12, 5, 5, and 3 percent of total industry sales. For the six firms in industry B, the figures are 35, 18, 15, 14, 10, and 8 percent. b. Calculate the four-firm concentration ratio and the Herfindahl index for each industry and compare their likely competitiveness. Instructions: Enter your answers as whole numbers. Industry A four-firm concentration ratio = Industry A Herfindahl index = Industry B four-firm concentration ratio = Industry B Herfindahl index = c. Industry A will be ________ (more/less) competitive than industry B. Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.arrow_forward
- Suppose an industry is composed of six firms. Four firms have sales of $10 each, and two firms haves sales of $5 each. What is the four-firm concentration ratio for this industry? calculate HHI for this industry?arrow_forwardSuppose that a small town has seven burger shops whose respective shares of the local hamburger market are (as percentages of all hamburgers sold): 23 percent, 22 percent, 18 percent, 12 percent, 11 percent, 8 percent, and 6 percent. What is the four-firm concentration ratio of the hamburger industry in this town? What is the Herfindahl index for the hamburger industry in this town? If the top three sellers combined to form a single firm, what would happen to the four-firm concentration ratio and to the Herfindahl indexarrow_forwardSuppose that a small town has seven burger shops whose respective shares of the local hamburger market are (as percentages of all hamburgers sold): 23 percent, 22 percent, 18 percent, 12 percent, 11 percent, 8 percent, and 6 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 =arrow_forward
- The following table reports the four firm concentration ratio for five different industries: Part 1: Refer to the table above. In which industry do the four largest firms have the most market power? Part2: Refer to the table above. I'm which industry do the four largest firms have the least market power?arrow_forwardSuppose that a small town has seven burger shops whose respective shares of the local hamburger market are (as percentages of all hamburgers sold): 23 percent, 22 percent, 18 percent, 12 percent, 11 percent, 8 percent, and 6 percent. Instructions: Enter your answers as a whole number. a. What is the four-firm concentration ratio of the hamburger industry in this town? Book percent Print b. What is the Herfindahl index for the hamburger industry in this town? erences 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 =arrow_forward
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