Economics (7th Edition) (What's New in Economics)
7th Edition
ISBN: 9780134738321
Author: R. Glenn Hubbard, Anthony Patrick O'Brien
Publisher: PEARSON
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Question
Chapter 13, Problem 13.3.7PA
To determine
Three conditions for a market to be perfectively competitive.
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Briefly explain using a graph whether given statement is true or false. “If firms in a monopolistically competitive industry are earning economic profits, new firms will enter the industry. Eventually, the representative firm will find that its demand curve has shifted to the left until it is just tangent to its average cost curve and it is earning zero profit. Because firms are earning zero profit at that point, some firms will leave the industry, and the representative firm will find that its demand curve will shift to the right. In long-run equilibrium, price will be above average total cost and each firm with make economic profit.”
The following graph represents a monopolistically competitive firm in long-run equilibrium.
Place the black point (cross sign) on the graph to indicate the short-run profit-maximizing price and quantity for this monopolistically competitive
company. Next, place the grey star on the graph to indicate the point where the LRAC reaches a minimum.
PRICE PER UNIT (Dollars)
500
450
400
350
300
250
200
150
100
50
MC
0
0
50
LRAC
MR
Demand
100 150 200 250 300 350 400 450 500
QUANTITY (Units)
Monopolistically Competitive Outcome
Minimum of the LRAC
The long-run equilibrium price is $
(Hint: Use the graph to find the numeric value of the price at equilibrium.)
The long-run equilibrium quantity is
units.
The LRAC curve is at its minimum at a quantity of
The long-run equilibrium price is
units.
the marginal cost of producing the equilibrium output.
?
Suppose that a company operates in the monopolistically competitive market for denim jackets. The following graph shows the demand curve,
marginal revenue (MR) curve, marginal cost (MC) curve, and average total cost (ATC) curve for the firm.
Place a black point (plus symbol) on the graph to indicate the long-run monopolistically competitive equilibrium price and quantity for this firm. Nex
place a grey point (star symbol) to indicate the minimum average total cost the firm faces and the quantity associated with that cost.
(?)
PRICE (Dollars per jacket)
100
90
80
70
60
50
ATC
20
40
30
20
10
10
MC
MR
Demand
0
+
+
0
10
20
30 40 50 60 70
80
90 100
QUANTITY (Thousands of jackets)
Mon Comp Outcome
Min Unit Cost
at the optimal
the efficient scale.
Because this market is monopolistically competitive, you can tell that it is in long-run equilibrium by the fact that P= ATC
quantity for each firm. Further, the quantity the firm produces in long-run equilibrium is
True or False: This indicates…
Chapter 13 Solutions
Economics (7th Edition) (What's New in Economics)
Ch. 13 - Prob. 13.1.1RQCh. 13 - Prob. 13.1.2RQCh. 13 - Prob. 13.1.3RQCh. 13 - Prob. 13.1.4PACh. 13 - Prob. 13.1.5PACh. 13 - Prob. 13.1.6PACh. 13 - Prob. 13.1.7PACh. 13 - Prob. 13.1.8PACh. 13 - Prob. 13.1.9PACh. 13 - Prob. 13.1.10PA
Ch. 13 - Prob. 13.2.1RQCh. 13 - Prob. 13.2.2RQCh. 13 - Prob. 13.2.3RQCh. 13 - Prob. 13.2.4PACh. 13 - Prob. 13.2.5PACh. 13 - Prob. 13.2.6PACh. 13 - Prob. 13.2.7PACh. 13 - Prob. 13.2.8PACh. 13 - Prob. 13.2.9PACh. 13 - Prob. 13.3.1RQCh. 13 - Prob. 13.3.2RQCh. 13 - Prob. 13.3.3RQCh. 13 - Prob. 13.3.4RQCh. 13 - Prob. 13.3.5PACh. 13 - Prob. 13.3.6PACh. 13 - Prob. 13.3.7PACh. 13 - Prob. 13.3.8PACh. 13 - Prob. 13.3.9PACh. 13 - Prob. 13.3.10PACh. 13 - Prob. 13.3.11PACh. 13 - Prob. 13.3.12PACh. 13 - Prob. 13.4.1RQCh. 13 - Prob. 13.4.2RQCh. 13 - Prob. 13.4.3RQCh. 13 - Prob. 13.4.4RQCh. 13 - Prob. 13.4.5PACh. 13 - Prob. 13.4.6PACh. 13 - Prob. 13.4.7PACh. 13 - Prob. 13.4.8PACh. 13 - Prob. 13.4.9PACh. 13 - Prob. 13.5.1RQCh. 13 - Prob. 13.5.2RQCh. 13 - Prob. 13.5.3PACh. 13 - Prob. 13.5.4PACh. 13 - Prob. 13.5.5PACh. 13 - Prob. 13.5.6PACh. 13 - Prob. 13.5.7PACh. 13 - Prob. 13.6.1RQCh. 13 - Prob. 13.6.2RQCh. 13 - Prob. 13.6.3PACh. 13 - Prob. 13.6.4PACh. 13 - Prob. 13.6.5PACh. 13 - Prob. 13.6.6PACh. 13 - Prob. 13.1CTECh. 13 - Prob. 13.2CTECh. 13 - Prob. 13.3CTE
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