PRINCIPLES OF MICROECONOMICS (OER)
PRINCIPLES OF MICROECONOMICS (OER)
2nd Edition
ISBN: 9781947172340
Author: Timothy Taylor, Steven A. Greenlaw
Publisher: OpenStax
Textbook Question
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Chapter 11, Problem 1SCQ

Is it true that a merger between two films that are not already in the top four by size can affect both the four-firm concentration ratio and the Herfindahl-Hirshmau Index? Explain briefly.

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To determine

Whether it is true that a merger between two firms that are not already in the top four by size can affect both the four-firm concentration ratio and the Herfindahl-Hirshman Index.

Answer to Problem 1SCQ

Yes, it is true that a merger between two firms that are not already in the top four by size can affect both the four-firm concentration ratio and the Herfindahl-Hirshman Index.

Explanation of Solution

Since, the market shares of all the firms are included in the HHI calculation, so when there is a merger between the two firms the HHI will change.

So, in the case of four- firm concentration ratio it is possible that the merger between let’s say the 6th and the 5th largest firms in the market would create a new firm that may be ranked in the top four in the market.

So, in the case mentioned above a merger of the two firms that are neither in the top four, but still they would change the four-firm concentration ratio.

So, it is true that a merger between two firms that are not already in the top four by size can affect both the four-firm concentration ratio and the Herfindahl-Hirshman Index.

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Is it true that a merger between two firms that are not already in the top four by size can affect both the four-firm concentration ratio and the Her findahl-Hirshman Index? Explain briefly.
what is the Four-firm concentration ratio (CR4)? what is the  Herfindahl-Hirshman Index (HHI)? and how are they different?
Question C2 The Australian Competition and Consumer Commission (ACCC) has opened an investigation regarding collusion between the two major firms producing fire protection gear for bush firefighters. The firms - Azure Associates and Blue Guard - contend that they are quantity competitors and that the prices they are charging are a result of an increase in price by their suppliers. As part of the case, the ACCC has noted that the Australian firefighters typically purchase their own protective gear and are thus price takers in the market. Both the ACCC and the two firms under investigation agree that the market demand can be described by the inverse demand function: P(Q)=240-Q, where Q is the total quantity provided by the two firms (i.e., Q=q₁ + 9B, where is the 9A amount produced by Azure Associates and q, is the amount produced by Blue Guard). All parties also agree that the two firms have identical production technologies and that the two firms have the same constant marginal cost of…

Chapter 11 Solutions

PRINCIPLES OF MICROECONOMICS (OER)

Ch. 11 - What is a corporate merger? What is an...Ch. 11 - What is the goal of antitrust policies?Ch. 11 - How do we measure a four-firm concentration ratio?...Ch. 11 - How do we measure a Herfindahl—Hirshman Index?...Ch. 11 - Why can it be difficult to decide what a market is...Ch. 11 - What is a minimum resale price maintenance...Ch. 11 - What is exclusive dealing? How might it reduce...Ch. 11 - What is a tie-in sale? How might it reduce...Ch. 11 - What is predatory pricing? How might it reduce...Ch. 11 - If public utilities are a natural monopoly, what...Ch. 11 - If public utilities are a natural monopoly, what...Ch. 11 - What is cost-plus regulation?Ch. 11 - What is price cap regulation?Ch. 11 - What is deregulation? Name some industries that...Ch. 11 - What is regulatory capture?Ch. 11 - Why does regulatory capture reduce the...Ch. 11 - Does either the four-firm concentration ratio or...Ch. 11 - What would be evidence of serious competition...Ch. 11 - Can you think of any examples of successful...Ch. 11 - If you were developing a product (like a web...Ch. 11 - In the middle of the twentieth century, major U.S....Ch. 11 - Why are urban areas willing to subsidize urban...Ch. 11 - Deregulation, like all changes in government...Ch. 11 - Do you think it is possible for government to...Ch. 11 - Use Table 11.5 to calculate the four-firm...Ch. 11 - Use Table 11.5 and Table 11.6 to calculate the...Ch. 11 - If the transit system were allowed to operate as...Ch. 11 - If the transit system were regulated to operate...Ch. 11 - If the transit system were regulated to provide...
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