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作者: danhao (灝) 看板: NTU-Exam
標題: [試題] 101上 李顯峰 經濟學一 期末考(~30+非選)
時間: Fri Jan 11 23:51:42 2013
課程名稱︰經濟學一
課程性質︰必修兼通識
課程教師︰李顯峰
開課學院：
開課系所︰工管系、地理系、生傳系
考試日期（年月日）︰101/01/07
考試時限（分鐘）：三節課(170分)
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
B卷
請在答案卷上先住明使用何種試題，試題不必交回
I.Choice Questions 選擇題 (每小題2%，合計60%)
16.Refer to Figure 3.If the ATC=20 at the profit-maximizing level of output,
which of the following will occur in the long run in this industry?
a. Firms will exit this industry.
b. Firms eill enter this industry.
c. This firm will continue to earn positive ecconomic profits.
d. This firm will incurlosses.
17.Worker who work the night shift(大夜班)are often paid more than those who do
identical work on the day shift(白日班). This is referred to as a
a. discriminatory wage practice.
b. compensating differential.
c. wage inequity.
d. a market inefficiency.
18.In the prisoner's dilemma game with Bonnie and Clyde as the players,the
likely outcome is
a. a very good outcome for both players.
b. a very good outcome for Bonnie, but a bad outcome for Clyde.
c. a very good outcome for Clyde, but a bad outcome for Bonnie.
d. a bad outcome for both players.
19.Rosie's Flower Shop sells floral arrangements 花束 for $20 each.If Rosie
hires 10 workers, she can sell 600 arrangements per week. If she hires 11
workers, she can sell 650 arrangements per week. Rosie pays each of her workers
$400 per week. Which of the following is correct?
a. For the 11th worker, the marginal profit is $1,000.
b. For the 11th worker, the marginal revenue product is $1,000.
c. The firm is maximizing its profit.
d. If the firm is employing 11workers, then its profit would increase if it cut
back to 10 workers.
20.When an oligopoly market reaches a Nash equilibrium,
a. the market price will be different for each firm.
b. the firms will not have behaved as profit maximizers.
c. a firm will have chosen its best strategy, given the stratfgies chosen by
other firms in the market.
d. a firm will not take into account the strategies of competing firms.
[Question 21 and 22] Table 2.This table shows a game played between two firms,
Firm A and Firm B. In this game each firm must decide how much output (Q) to
produce: 10 units or 12 units.The profit for each firm is given in table as
(Profit for Firm A, Profit for Firm B).
Firm B
Q=10 Q=12
＿＿＿＿＿＿＿＿＿＿＿＿
Q=10 (48,48) (20,60)
Firm A ＿＿＿＿＿＿＿＿＿＿＿＿
Q=12 (60,20) (38,38)
21.Refer to Table 2. The Nash equilibrium for this game is
a. 10 units of output for Firm A and 10 units of output for Firm B.
b. 10 units of output for Firm A and 12 units of output for Firm B.
c. 12 units of output for Firm A and 10 units of output for Firm B.
d. 12 units of output for Firm A and 12 units of output for Firm B.
22.Refer to Table 2. If these two firms play this game repeatedly, the likely
outcome will be
a. 10 units of output for Firm A and 10 units of output for Firm B.
b. 10 units of output for Firm A and 12 units of output for Firm B.
c. 12 units of output for Firm A and 10 units of output for Firm B.
d. 12 units of output for Firm A and 12 units of output for Firm B.
23.Which of the following characteristics of competitve markets is necessary
絕對必要 for firms to be price takers?
(i) There are many sellers.
(ii) Firms can freely enter or exist the market.
(iii) Goods offered for sale are largely the same.
a.(i) and (ii) only
b.(i) and (iii) only
c.(ii) only
d.(i), (ii), and(iii)
[Question 24-25] Table 1 Percentage of Before-Tax Income 課稅前所得 Received by
Families HaHaland:
Quintile Share of Income Share of Income Share of Income
by Quintile五分 by Quintile五分 by Quintile五分
位,2000 位,2003 位,2007
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
Botton Fifth 4.3% 4.1% 3.4%
Second Fifth 9.8% 9.6% 8.8%
Middle Fifth 15.5% 15.5% 14.7%
Fourth Fifth 22.8% 23.2% 22.8%
Top Fifth 47.7% 47.6% 50.3%
24.Refer to Table 1. In 2007, the top fifth of families have
a. almost 15 times as much income as the bottom fifth of families.
b. 96.6% more income than the bottom fifth of families.
c. 50.3% more income than the bottom fifth of families.
d. 46.9% more income than the bottom fifth of families.
25.Refer to Table 1. Comparing data from 2000 and 2007, which of the following
statements is correct?
a. There has been no change in overall income inquality because the share of
income held by the fourth fifth is identical.
b. Overall income inequality has worsened slightly, as shown by the
simultaneous increase in the share of income held by the top fifth and the
decrease in the shre of income held by the bottom fifth.
c. Overall income inequality has improved because the share held by the middle
fifth has declined by almost 1%.
d. None of above is corrected.
26.As a gruop, oligopolists would always earn the highest profit if they would
a. produce the perfectly competitive quantity of output.
b. produce more than the perfectly competitve quanity of output.
c. charge the same price that a monopolist would charge if the market were a
monopoly.
d. operate accroding to their own individual self-interests.
27.When a natural monopoly 自然獨占 exist, it is
a. always cost effective 成本較低for government-owned firms to produce the
product.
b. never cost effective for one firm to produce the product.
c. always cost effective for two or more private firms to produce the product.
d. never cost effective for two or more private firms to produce the product.
28.Monopolistic competition is characterized by which of following attributes
性質?
(i) free entry
(ii) product differentiation
(iii) many sellers
a.(i) and (iii) only
b.(i) and (ii) only
c.(ii) and (iii) only
d.(i), (ii), and(iii)
29.A fundamental source of monopoly market power arises from
a. perfectly elastic demand.
b. perfectly inelastic demand.
c. barriers to entry.
d. availability of "free" natural resources, such as water or air
30.Patent 專利權 and copyright 版權 laws encourage
a. creativity.
b. research and development.
c. competition among firms.
d. Both a and b are correct.
II.Essay Questions and Problem 問答計算申論題(需列出計算或推理過程，計40%)
1.(15%)Safety Co. is a monopolist in the doorstop industry. Its marginal cost
MC = -5 + 2Q,and market demand is P = 55-2Q, marginal revenue MR = 55 - 4Q.
Please find:
(1)What price and output should Safety Co.set to maximize profit?
(2)What is the deadweight loss 無謂福利損失 from monopoly power if Safety Co.
acted like a perfect competitor?
2.(15%)(a double market)Suppose two indentical firms produce a homogeneous
good face a linear market demand curve P = 36-Q, where Q is the total
production of both firms, i.e. Q = q1 + q2,q1 and q2 are the output of firm 1
and firm 2,respectively. MR = 36-2Q Also, suppose that both firms have zero
marginal cost : MC1 = MC2 =0
Each firm maximizes its own profit, and find
Firm 1's reaction curve: q1 = 18 - q2/2,
Firm 2's reaction curve: q2 = 18 - q1/2,
Please find:
(1)the Cournot equilibrium quantity of firm 1 and 2, qc1 and qc2,and the
equilibrium market price Pc0.
(2)the monopoly output Qm and monopoly price Pm.
(3)if two firms agree to share profits equally, what output each firm will
produce q01 and q02?
(4)If it is in a perfect competition market, what is the equilibrium market
output Qc and Pc and profitΠ?
3.(10%)For a given firm, the marginal revenue product of labor MRPL= $50 and
the marginal revenue product of capital MRPK= $100 while the unit price of
labor PL= $10 and the capital service price PK= $20.
(1)Is the firm maximizing profits? Why or why not?
(2)Identify a specific action that would increase this firm's profits.
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◆ From: 140.112.245.205
※ 編輯: danhao 來自: 140.112.245.205 (01/12 00:07)
※ 編輯: danhao 來自: 140.112.245.205 (01/12 14:21)
課程名稱︰經濟學一
課程性質︰必修兼通識
課程教師︰李顯峰
開課學院：
開課系所︰工管系、地理系、生傳系
考試日期（年月日）︰ 101/01/07
考試時限（分鐘）：三節課(170分)
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
B卷
請在答案卷上先住明使用何種試題，試題不必交回
I.Choice Questions 選擇題 (每小題2%，合計60%)
1.John has decided to start his own lawn-mowing 割草 business.To purchase the
mowers 割草機 and the trailer 拖車 to transport the mowers, John withdraw 提款
$1,000 from his savings account, which was earning 3% interest, and borrowed
an additional $2,000 from the bank at an interest rate of 7%. What is John's
annual opportunity cost of the financial capital that has been invested in the
business?
a. $30
b. $140
c. $170
d. $300
2.Which of the following expressions correct?
a. accounting profit = economic profit + implict costs
b. accounting profit = total revenue - implict costs
c. economic profit = accounting profit + explict costs
d. economic profit = total revenue - implict costs
3.If Cathy's Coffee Emporium sells its product in a comptitive market, then
a. the price of that product depends on the quantity of the product that
Cathy's Coffee Emporium produces and sells because Cathy's Coffee Emporium's
demand curve is downward sloping.
b.Cathy's Coffee Emporium's total revenue must be proportional to its quantity
of output.
c.Cathy's Coffee Emporium's total cost must be a constant multiple of its
quantity of output.
d.Cathy's Coffee Emporium'stotal revenue must be equal to its average revenue.
4.The profit-maximization problem for a monopolist differs from that of a
competitive firm in which of the following ways?
a. A competitive firm maximizes profit at the point where marginal revenue
equals marginal cost; a monopolist maximizes profit at the point where marginal
revenue exceeds marginal cost.
b. A competitive firm maximizes profit at the point where average revenue
equals marginal cost; a monopolist maximizes profit at the point where marginal
revenue exceeds marginal cost.
c. For a cometitve firm,marginal revenue at the profit-maximizing level of
output is equal to marginal revenue at all other levels of output; for a
monopolist, marginal revenue at the profit-maximizing level of output is
smaller than it is for large levels of output.
d. For a profit-maximizing competitive firm, thinking at the marginal is much
more important than it is for a proft-maximizing monopolist.
5.For a monopoly, the level of output at which marginal revenue equals zero is
also the level of output at which
a. average revenue is zero.
b. profit is maximized.
c. total revenue is maximzed.
d. marginal cost is zero.
6.Suppose when a monopolist produces 75 units its average is $10 per unit, its
margnal revenue is $5 per unit, its marginal cost is $6 per unit, and its
average total cost is $5 per unit. What can we conclude about this monopolist?
a. The monopolist is currently maximizing profits, and its total profits are
$375.
b. The monopolist is currently maximizing profits, and its total profits are
$300.
c. The monopolist is not current maximizing profits; it should produce more
units and charge a lower price to maximize profits.
d. The monopolist is not current maximizing profits; it should produce fewer
units and charge a higher price to maximize profits.
7.Suppose that a firm operating in perfectly competitive market sells 100 units
of output. Its total revenue from the sale are $500. Which of the following
statements is correct?
(i) Marginal revenue equals $5.
(ii) Average revenue equals $5.
(iii) Price equals $5.
a. (i) only
b. (ii) only
c. (i)and(ii)only
d. (i),(ii),and(iii)
[Questions 8 and 9] Figure1.
↑cost
∣∣
∣∣
∣∣ 一條類似反比的線(圖畫好醜)
∣ ＼＿＿＿ ATC
∣
∣＿＿＿＿＿＿
Quantity
8.Refer to Figure 1. The shape of the average total cost curve reveals
information the nature of the barrier to entry that might exist in a monopoly
market. Which of following monopoly types best concides with the figure?
a. ownership of a key resource by a singal firm
b. natural monopoly
c. government-created monopoly
d. a patent or copyright monopoly
9.Refer to Figure 1.Considering the relationship between average total cost and
marginal cost, the marginal cost curve for this firm
a. must lie entirely above the average total cost curve.
b. must lie entirely below the average total cost curve.
c. must be upward sloping.
d. does not exist.
[Question 10 and 11 ] Figure 2
price
↑
∣(90,0)
∣﹨╲
∣ ﹨ ╲ MC
∣ ﹨ ╲ ／
∣ ﹨ ╲／(45,45)
∣ ﹨ ／╲
∣ ／ ╲
∣ ／﹨ ╲ Demand
∣ ／ ﹨ MR ╲
∣／＿＿＿﹨＿＿＿＿╲＿
(45,0) (90,0)
10.Refer to Figure 2. The consumer surplus at the monopolist's profit-
maximizing price is
a. $450.
b. $900.
c. $1,350.
d. $2.025.
11.Refer to Figure 2. The deadweight loss caused by a profit-maximizing
monopoly amounts to
a. $225.
b. $450.
c. $900.
d. $1,350.
12.A monopolistically competitive firm faces the following demand schedule for
its product:
Price($) ∣10∣ 9∣ 8∣ 7∣ 6∣ 5∣ 4∣ 3∣ 2∣ 1
——————————————————————————
Quantity ∣ 2∣ 4∣ 6∣ 9∣11∣13∣15∣17∣19∣21
The firm has firm has total fixed cost of $20 and a constant marginal cost of
$2 per unit.The firm will maximize profit with
a. 6 units of output.
b. 9 units of output.
c. 11 units of output.
d. 13 units of output.
13.A perfectly price-discriminating mono polist is able to
a. maximize profit and produce a socially-optimal level of output.
b. maximize profit, but not produce a socially-optimal of output.
c. produce a socially-optimal level of output , but not maximize profit.
d. exercise illegal preferences regarding the race and/or gender of its
employees.
[Question 14-16] Figure3. The figure is drawn for a monopolistically
competitivie firm.
price
↑
∣
∣﹨╲
∣ ﹨ ╲ (12,18) MC
∣ ﹨ ╲ ／
∣ ﹨ ╲／(16,16)
∣ ﹨ ／╲
∣ ／(12,12)
∣ ／﹨ ╲ Demand
∣ ／ ﹨ MR ╲
∣ ＿＿＿＿＿＿＿＿＿＿
Q
14.Refer to Figure 3. Suppose that average total cost is $18 when Q=12.
What is the profit-maximizing price and resulting profit?
a. P = $12, profit = $0
b. P = $18, profit = $72
c. P = $18, profit = $24
d. P = $18, profit = $0
15.Refer to Figure 3. Suppose you were to add the ATC curve to the diagram to
show the firm in a situation of long-run equilibrium. You would draw the ATC
curve
a. with its minimum at the point (Q = 12, P =$18).
b. with its minimum at the point (Q = 12, P =$12).
c. tangent to the demand curve at point (Q = 12, P =$18).
d. tangent to the demand curve at point (Q = 12, P =$18).
(剩下一半選擇題15~30和非選擇題待補打)
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