98年國立臺灣大學財務金融學系經濟學線上測驗

2.: Which of the following macroeconomic variables would you exclude from an index of
leading economic indicators?
(A): Money supply
(B): Industrial production
(C): Inventory investment
(D): Residential investment

3.: The Keynesian theory is consistent with the business cycle fact that inflation is
(A): procyclical and leading
(B): procyclical and lagging
(C): countercyclical and leading
(D): countercyclical and lagging.

4.: Three factors that cause interest rates among different financial instruments to vary are
(A): default risk, expected inflation, and taxability
(B): default risk, current inflation, and taxability
(C): default risk, maturity, and taxability
(D): default risk, expected inflation, and maturity

5.: The Lucas critique is an objection to the assumption that
(A): inflation is always and everywhere a monetary phenomenon
(B): there is a negative relationship between inflation and unemployment
(C): historical relationships between macroeconomic variables will continue to hold
after new policies are in place.
(D): people form expectations rationally

6.: The uses-of-saving identity says that an economy’s private saving is used for
(A): investment, interest expenses, and the government budget deficit.
(B): investment, the government budget deficit, and the current account.
(C): investment, interest expenses, the government budget deficit, and the current
account.
(D): investment, interest expenses, the government budget deficit, transfer payments,
and the current account.

7.: Purchasing power parity does not hold in the short to medium run because
(A): exports don’t equal imports.
(B): exchange rates fluctuate too much.
(C): most business cycles are caused by shocks to aggregate demand
(D): countries produce different goods.

8.: The primary factor that caused some economists to lose their faith in the Keynesian
approach to macroeconomic policy was
(A): the high levels of unemployment that occurred during the Great Depression.
(B): the presence of both high unemployment and high inflation during the 1970s
(C): theoretical proof that Keynes’s ideas were invalid.
(D): evidence that Keynes’s ideas were useful during economic recessions, but not
during economic booms.

9.: Suppose that a monopoly can produce any level of output it wishes at a constant
marginal (and average)cost of $5 per unit. Assume that the monopoly sells its goods in
two different markets that are separated by some distance. The demand curve in the
first market is given by Q₁ =110 − 2P₁ and the demand curve in the second market is
given by Q₂ = 85 − P₂ .
(1) If it only costs demanders $3 to transport goods between the two markets, what
level of output should be produced in each market, and what price will prevail in
each market? What are total profits in this situation? (10%)
(2) How would your answer change if transportation costs were zero and the firm was
forced to follow a single-price policy? (10%)

11.: 風險中立的投資人某甲考慮是否購買一筆土地。其若購買該筆土地，則將於一年
後賣出。該土地目前售價為100 萬元，一年後有0.6 的機率價格為170 萬元，有
0.4 的機率價格為30 萬元。假設土地買賣無任何稅及交易成本，且某甲若不將資
金用於購買土地，則只能將錢放在保險箱中。
在決定是否購買該筆土地之前，某甲可向某乙購買關於該土地未來價格的報
告。報告有兩種結果：價值高與價值低。有0.5 的機率報告結果為價值高，有0.5
的機率報告結果為價值低。若結果為價值高，則該筆土地在一年後有0.8 的機率
價格為170 萬元，有0.2 的機率價格為30 萬元。若結果為價值低，則該筆土地在
一年後有0.4 的機率價格為170 萬元，有0.6 的機率價格為30 萬元。
(a) 若某甲不購買某乙的資訊，則其購買該筆土地所獲得的期望利潤為 (3)
萬元。
(b) 某甲最多願意付 (4) 萬元來購買某乙的資訊。

模擬測驗