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Profit-sharing plans, where employees receive bonuses in proportion to the company's profits,


A) reduce the principal-agent problem.
B) are intended to reduce the number of employees who are residual claimants.
C) eliminate shirking problems.
D) are essentially gifts to employees and do not generate any benefit for the firm's owners.

E) B) and C)
F) All of the above

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The average fixed costs of a firm equal


A) implicit costs divided by output.
B) explicit costs divided by output.
C) total cost minus variable cost.
D) (total cost minus variable cost) divided by output.

E) None of the above
F) C) and D)

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In 1632, the Virginia Legislature decreed that all love apples must be sold for $1 per bushel (no more, no less) . At the time, Mr. McKintoch had 1,000 bushels of love apples ready for harvesting. His sunk costs were $1,100, and his total costs (including sunk costs) would have been $1,800 if he harvested. If McKintoch decided not to harvest because he did not think he could cover his total costs, he


A) made the wrong decision, but for the right reason.
B) made the wrong decision; the sunk cost component of total cost should not have affected his decision to harvest.
C) made the correct decision and considered the correct decision-making criteria; a firm should never sell for less than its costs.
D) One cannot determine from the data whether he should have harvested the love apples.

E) All of the above
F) B) and D)

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A downward-sloping portion of a long-run average total cost curve is the result of


A) economies of scale.
B) diseconomies of scale.
C) diminishing returns.
D) the existence of fixed resources.

E) C) and D)
F) None of the above

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If a firm's per-unit costs fall as it produces a larger output,


A) average variable cost must also decline as output expands.
B) marginal cost must also decline as output expands.
C) average fixed cost must be less than average variable costs.
D) marginal cost must be less than average total cost.

E) B) and C)
F) A) and D)

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Which of the following is a difference between corporations and partnerships?


A) Partnerships are subject to double taxation; corporations are not.
B) With partnerships, ownership rights are divisible and easily transferable; this is not true for corporations.
C) Corporate owners face limited liability; owners of partnerships do not.
D) Corporations always have more owners than partnerships.

E) A) and B)
F) A) and C)

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Approximately three-fourths of all U.S. firms are


A) corporations.
B) proprietorships.
C) partnerships.
D) consumer cooperatives.

E) B) and D)
F) A) and B)

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Marginal cost is best defined as


A) a cost that does not vary with the rate of output.
B) the difference between fixed and variable cost at any level of output.
C) the amount added to total cost when one more unit of output is produced.
D) the difference between price and average total cost at the profit-maximizing level of output.

E) A) and B)
F) A) and C)

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An activity known as shirking is least likely to occur when


A) workers are not monitored.
B) all workers are paid the same wage rate.
C) the earnings of workers are closely tied to the worker's output.
D) the firm is organized as a corporation.

E) All of the above
F) A) and B)

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In the short run, the marginal cost curve crosses the average total cost curve at


A) a point just below the average fixed cost curve.
B) the minimum point on the average total cost curve.
C) the maximum point of the average variable cost curve.
D) all of the above points.

E) A) and D)
F) A) and C)

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A family has decided to go away for the summer. The monthly mortgage payment on the family's house is $1,000. Water, electricity, natural gas, and maintenance bills, to be paid by the family, will be $700 per month if the house is occupied and zero otherwise. If the family wishes to minimize losses from being away, it should rent the house for as much as the market will bear, as long as the monthly rent is above which of the following? (Assume wear and tear to be the same whether or not the house is occupied.)


A) $300
B) $700
C) $1,000
D) $1,700

E) A) and D)
F) A) and C)

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Mary owns her own business and works full time in the store without paying herself a salary. She has $20,000 of her own money invested in the store that she withdrew from her savings account, which earned 10 percent interest. She was offered a job last year making $28,000 per year but turned it down. If Mary's accounting statements show revenues of $100,000 and accounting costs of $60,000, then Mary's


A) accounting profit is $20,000 and her economic profit is zero.
B) accounting profit is $40,000 and she is making an economic loss of $8,000.
C) accounting profit is $40,000 and her economic profit is $10,000.
D) accounting and economic profit is $40,000.

E) B) and D)
F) B) and C)

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As output is expanded, if MC is less than ATC,


A) ATC must be at its minimum.
B) ATC must be at its maximum.
C) ATC must be decreasing.
D) the firm must be earning economic profit.

E) None of the above
F) A) and B)

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Figure 8-13 Figure 8-13    -Movement from point b to point c in Figure 8-13 indicates that the firm is experiencing A) economies of scale. B) increasing average cost. C) economies of cost. D) a decrease in average plant size. E) diseconomies of scale. -Movement from point b to point c in Figure 8-13 indicates that the firm is experiencing


A) economies of scale.
B) increasing average cost.
C) economies of cost.
D) a decrease in average plant size.
E) diseconomies of scale.

F) A) and B)
G) D) and E)

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Which of the following represents a long-run adjustment?


A) the hiring of four additional cashiers by a supermarket
B) a cutback on purchases of coke and iron ore by a steel manufacturer
C) construction of a new assembly-line plant by a car manufacturer
D) the extra dose of fertilizer used by a farmer on his wheat crop

E) B) and C)
F) All of the above

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Figure 8-6 Figure 8-6    -At what output does the firm depicted in Figure 8-6 begin to experience diminishing marginal returns to its variable factors of production? A) Q₁ B) Q₂ C) Q₃ D) an output beyond Q₃ -At what output does the firm depicted in Figure 8-6 begin to experience diminishing marginal returns to its variable factors of production?


A) Q₁
B) Q₂
C) Q₃
D) an output beyond Q₃

E) B) and C)
F) All of the above

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Where marginal cost is less than average cost,


A) opportunity cost must have been excluded from the calculation of marginal cost.
B) marginal cost must be falling.
C) marginal cost must be rising.
D) marginal cost may be rising, falling, or constant.

E) B) and D)
F) All of the above

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If average fixed costs equal $60 and average total costs equal $120 when output is 100, the total variable cost must be


A) $40.
B) $60.
C) $6,000.
D) $8,000.

E) A) and B)
F) C) and D)

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Figure 8-3 Figure 8-3    -The average variable cost (AVC)  and average total cost (ATC)  for a firm are indicated in Figure 8-3. If the marginal cost curve were constructed, at what output would it cross the AVC curve? A) 2 B) 3 C) 4 D) 5 -The average variable cost (AVC) and average total cost (ATC) for a firm are indicated in Figure 8-3. If the marginal cost curve were constructed, at what output would it cross the AVC curve?


A) 2
B) 3
C) 4
D) 5

E) C) and D)
F) B) and C)

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Sunk costs


A) are expenditures made in the past that cannot be regained no matter what is done now or in the future.
B) are a component of variable costs, but not fixed costs.
C) represent foregone opportunities, and therefore the firm's managers should consider these costs when they are making current decisions.
D) can be avoided if the firm goes out of business.

E) All of the above
F) A) and C)

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