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# Problem Set

Question # 00000185
Subject: Economics
Due on: 07/17/2013
Posted On: 07/23/2013 01:12 PM

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Complete the following problem :

The attached table represents the market share of the top eight firms in a hypothetical industry in 2006 and 2011.

• Calculate the four-firm concentration ratios for 2006 and 2011. Analyze the industry changes during this five-year period.
• Calculate the eight-firm concentration ratios for 2006 and 2011. Does this index give you any different indication about changes in the industry over the same period?
• Calculate the Herfindahl-Hirschman Indexes for 2006 and 2011. What information does this index tell you about changes in the industry? How does this information differ from the four-firm and eight-firm indexes?
• Hypothesize what you think might have happened to supply, demand, and price of products in this industry from 2006 to 2011. Use charts, if appropriate, to illustrate your response.

5-4 Homework: Problem Set Data

 Firm Market Share 2006 Market Share 2011 A 10% 32% B 8% 5% C 12% 12% D 20% 29% E 21% 9% F 2% 1% G 5% 4% H 6% 2%

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#### Economic problem solution

Tutorial # 00000104
Posted On: 07/23/2013 01:14 PM
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