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課程名稱︰經濟學原理與實習一
課程性質︰必修/A5通識
課程教師︰王道一
開課學院：社會科學院
開課系所︰經濟系
考試日期（年月日）︰98.01.05
考試時限（分鐘）：10:20-12:10 (110mins)
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
一.選擇題(30%)
1.Jane decides to open her own business and earn $50,000 in accounting profit
the first year. When deciding to open her own business she turned down three
separate job offers with annual salaries of $30,000, $40,000, and $45,000.
What is Jane's economic profit from running her own business?
A.$-65,000 B.$5,000 C.$45,000 D.$20,000
2.If there is an increase in the market demend in a perfectly competitive
market, then in the short run
A.there will be no change in the demend curves faced by individual firms in
the market.
B.the demend curves for the firm will shift downward.
C.the demend curves for the firm will become more elastic.
D.profit will rise.
3.Additional firm often do not try to compete with a natural monopoly because
A.the fear retaliation in the form of pricing wars from the natural
monopolist.
B.they are unsure of the size of the market in general.
C.they know they cannot achieve the same low costs that the monopolist
enjoys.
D.the natural monopoly doesn't make a huge profit.
4.Very often, the reason that players can solve the prisoners' dilemma and
reach the most profitable outcome is that
A.each player tries to capture a large portion of the market share.
B.the player play the game not once but many times.
C.the game becomes more competitive.
D.self interest results in Nash equilibrium which is the best outcome for
the players.
5.Senator Hubris wants to pass a law that would require all monopolistically
competitive firms to operate at their effecient scale. If this law were to
pass and be enforced, we would expect that monopolisticlly competitive
firms would
A.see their profits increase.
B.break even.
C.lose money.
D.not really be affected by the law.
6.When we focus on the firm as a supplier of a good or a service, we assume
that the firm is a profit maximizer. When we focus on the firm as a
demander of labor, we assume that the firm's objective is to
A.minimize wage.
B.minimize variable costs.
C.maximize the number of workers hired.
D.maximize profit.
7.When a profit-maximizing firm in a monopolisticlly competitive market is in
long-run equilibrium,
A.the demend curve will be perfectly elastic.
B.price exceed marginal cost.
C.marginal cost must be falling.
D.marginal revenue exceeds marginal cost.
8.As a group, oligopolists would always earn the highest profit if they would
A.produce the perfectly competitive quantity of output.
B.produce more than the perfectly competitive quantity of output.
C.charge the same price that a monopolist would charge if the market were a
monopoly.
D.operate according to their own individual self-interest.
9.(圖表題)
10.The fundamental reason that marginal cost eventually rises as output
increase is because of
A.economic of scale.
B.diseconomic of scale.
C.diminishing marginal product.
D.rising average fixed cost.
二.計算與問答題(70%)
1.星久克為餅乾市場中眾多廠商之一，此產業已達長期均衡狀態。
(1)請在座標平面上展現星久克的均衡狀態[你需要畫需求線、邊際收益曲線、平均總成
本線與邊際成本曲線]，並標示最大利潤產量與價格；(10%)
Hint:請判斷星久克適用於我們所學過的哪一種市場經濟。
(2)星久克是否存在利率？請解釋；(5%)
(3)請標示對應有效規模下之產量；(5%)
(4)請標示社會效率產量；(5%)
(5)星久克公司是否需要編列廣告預算，請簡略說明。(5%)
2.完全競爭、獨占與寡占市場之最適產量決定。
假定某市場對商品的需求如表2所示。此外，假定廠商生產產品之邊際成本為零。
(1)試求算完全競爭市場下之最適產量；(5%)
(2)假設該市場的廠商完全被一家特定廠商整合，進而形成獨占市場，試求算獨占市場下
之最適產量；(5%)
(3)若該獨佔市場被兩家廠商所平均瓜分，試求算寡占市場下個別廠商(廠商1與廠商2)之
均衡數量，以及求算寡占市場下之總產量；(10%)
(4)假設某一新廠商進入市場，並與原本之兩家既有廠商瓜分市場產量，試求算寡占市場
下個別廠商(廠商1、廠商2與廠商3)之均衡數量，，以及求算寡占市場下之總產量。
(10%)
表2:
產量 0 5 10 15 20 25 30 35 40 45 50 55 60
價格 ($) 60 55 50 45 40 35 30 25 20 15 10 5 0
總收益與
總利潤($) 0 275 500 675 800 875 900 875 800 675 500 275 0
3.根據個人特質訊息傳遞觀點，接受教育與否是否會改善個人的生產力，請簡略說明。
(5%)
4.你對經濟學這門課有何感想？(5%)
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