ENGR.ECONOMIC ANALYSIS
ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN: 9780190931919
Author: NEWNAN
Publisher: Oxford University Press
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questions 5 and 6
1. Which market structure(s) will have zero economic profits in the long run?
The perfect competition market structure.
2. Which market structure(s) will be a price maker and have barriers to entry?
The monopoly market structure.
3. There are currently 8 firms in a particular market. There firm sales are given in the table below. (1)
What is the four-firm concentration ratio for this industry? (2) Would you classify it as an oligopoly?
60%.
4.
Firm
1
2
3
4
5
6
7
8
3.1 Four Firm concentration ratio= 71.43%
3.2 You would classify it as an oligopoly because the concentration ratio is greater than
Sales
$1,000
$1,500
$2,000
$2,500
$3,000
$1,000
$500
$2,500
Airhough market structures vary widely in their characteristics, (1) what is one common aspect
among all of them? (2) What is the potential calculation for your previous answer (Answers in
4.1)?
4.1 One thing that all the market structures have in common is that they are all motivated
by the desire to make a profit and serve a sufficiently large consumer base.
4.2 Only monopoly and oligopoly enterprises generate supernormal earnings, whereas
monopolistic competition generates supernormal profits in the short run. In perfect
competition, economic profit is zero for most firms in the long run.
5. In the long run, (1) which market structures are likely to have their average cost curve just sit on
top of their demand curve? (2) What does this imply for each market structure? (3) Are there any
differences in the market structures you gave in your previous answer?
5.1
6. What market structure(s) are likely to cause a net loss to societal welfare?
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Transcribed Image Text:1. Which market structure(s) will have zero economic profits in the long run? The perfect competition market structure. 2. Which market structure(s) will be a price maker and have barriers to entry? The monopoly market structure. 3. There are currently 8 firms in a particular market. There firm sales are given in the table below. (1) What is the four-firm concentration ratio for this industry? (2) Would you classify it as an oligopoly? 60%. 4. Firm 1 2 3 4 5 6 7 8 3.1 Four Firm concentration ratio= 71.43% 3.2 You would classify it as an oligopoly because the concentration ratio is greater than Sales $1,000 $1,500 $2,000 $2,500 $3,000 $1,000 $500 $2,500 Airhough market structures vary widely in their characteristics, (1) what is one common aspect among all of them? (2) What is the potential calculation for your previous answer (Answers in 4.1)? 4.1 One thing that all the market structures have in common is that they are all motivated by the desire to make a profit and serve a sufficiently large consumer base. 4.2 Only monopoly and oligopoly enterprises generate supernormal earnings, whereas monopolistic competition generates supernormal profits in the short run. In perfect competition, economic profit is zero for most firms in the long run. 5. In the long run, (1) which market structures are likely to have their average cost curve just sit on top of their demand curve? (2) What does this imply for each market structure? (3) Are there any differences in the market structures you gave in your previous answer? 5.1 6. What market structure(s) are likely to cause a net loss to societal welfare?
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