Exam 14: A Managers Guide to Government in the Marketplace
The domestic demand and supply for sugar are Qd = 700 - 2P and QSD = 100 + 4P. The foreign supply is QSF = 150 + 3P. What is the total supply of sugar in the domestic market?
A
Suppose the external marginal cost of pollution is MCexternal = 5Q and the internal marginal cost is MCinternal = 10Q. Further, assume the inverse demand for the product, Q, is given by P = 90 - Q.
a. What is the socially efficient level of output?
b. How much output would a competitive industry produce?
c. How much output would a monopoly produce?
d. Discuss three ways government can induce firms to produce the socially efficient level of output.
a. The socially efficient level of output is such that P = MCexternal + MCinternal. Given these cost and demand conditions, this implies 90 - Q = 15Q, or Q = 5.625 units.
b. A competitive industry would produce such that P = MCinternal, which in this case reduces to 90 - Q = 10Q. Solving for Q yields a competitive industry output of Q = 8.18 units.
c. A monopoly would produce such that MR = MCinternal. In this case, this condition implies 90 - 2Q = 10Q. Solving for Q yields the monopoly output of 7.5 units.
d. The government could sell permits to the firms to allow them to emit negative externalities, or impose a production tax on the firms in the industry. Notice that, since the monopoly is closest to the socially efficient level of output, a lower tax would be required for it than for the competitive industry.
Which of the following is NOT a pure public good?
C
The external marginal cost of producing coal is MCexternal = 6Q while the internal marginal cost is MCinternal = 4Q. The inverse demand for coal is given by P = 120 - 2Q. How much output would a monopoly produce?
According to the Clean Air Act, a new firm in the covered industry is required to:
The domestic demand and supply for sugar are Qd = 60,000 - 400P and QSD = 20,000 + 500P. The foreign supply is QSF = 20,000 + 100P. What is the domestic market price of sugar?
In order to eliminate the inefficiency brought about by a monopoly, the government wants to impose a price ceiling on the monopoly. What is the optimal price to be imposed?
Consider the monopoly in the figure below with price regulated at $20 per unit. In this market, ___________ units will be exchanged. 

The domestic demand and supply for sugar are Qd = 40,000 - 200P and QSD = 10,000 + 300P. The foreign supply is QSF = 20,000 + 100P. Suppose an import quota of 5,000 is imposed in the domestic market. What will be the new market price of sugar?
The domestic demand and supply for sugar are Qd = 60,000 - 400P and QSD = 20,000 + 500P. The foreign supply is QSF = 20,000 + 100P. Suppose an import quota of 13,000 is imposed in the domestic market. What will be the new market price of sugar?
Consider the monopoly in the figure below with price regulated at $2 per unit. The deadweight loss under the regulated price is: 

The external marginal cost of producing coal is MCexternal = 6Q while the internal marginal cost is MCinternal = 4Q. The inverse demand for coal is given by P = 120 - 2Q. How much output would a competitive industry produce?
The domestic demand and supply for sugar are Qd = 700 - 2P and QSD = 100 + 4P. The foreign supply is QSF = 150 + 3P. Suppose an import quota of 100 is imposed in the domestic market. What will be the new market price of sugar?
Which of the following explains why big business typically spends more on rent-seeking activities than consumers?
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