所屬科目:研究所、轉學考(插大)-經濟學
14. A flexible accelerator model can be showed as the equation ,where is net investment, is an adjustment coefficient, and is the desired and the capital stock in the last period, respectively. The capital depreciation equation is D=0.1K。If the capital stock ,,D0=4,and α=0.5. Thus, the gross investment in the period t=3. (A) 3 (B) 4.3 (C) 7 (D) 8.3 (E)None of the above.
18. A、B 兩人參加一賽局,可選擇方案為甲案或乙案,可獲得的報酬如下列償付矩陣(payoff matrix)表中的,例如,左上方的(40, 20)表示 A、B 兩人均選甲案時,A 可獲得的報酬 20。
(A) A 的最佳策略為乙,B 的最佳策略為甲
(B) A 的最佳策略為甲,B 的最佳策略為乙 (C) A、B 的最佳策略可達到 Nash 均衡 (D)該賽局不是零和賽局(zero-sum game) (E) A、B 的最佳策略無法達到柏拉圖效率(Pareto Efficiency)。
24.若慢活國的菲力浦曲線(Phillips curve)是 ,其中π是物價上漲率, 是預期物價上漲率, ,t 是期間, 是 t 期預期一般物價水準, 為自然失業率(natural rate of unemployment)。假設 ,且 。
(A)若政府決定採取擴張性政策措施,將失業率降至 0.04,且執行二期,則π2=0.06。
(B)若政府決定採取擴張性政策措施,將失業率降至 0.04,且執行二期,則π2=0.05。
(C)若政府決定將第 3 至 6 期失業率維持為 0.06,則人們不能預期到物價上漲率降低 為 0.04。
(D)若政府決定將第 3 至 6 期失業率維持為 0.06,則人們能預期到物價上漲率降低為 0.04。 (E)以上皆非。
25. Serbann economy can be characterized by the production function: , with a capital stock of $4,000 billion and current net investment of $200 billion. Therefore,(A) if the growth rate of autonomous factors is zero and the growth rate of labor and capital is 0.01 and 0.04 respectively, then the current growth rate of per person output is 0.02. (B) if the growth rate of autonomous factors is zero and the growth rate of labor and capital is 0.01 and 0.04 respectively, then the current growth rate of per person output is 0.01. This is not a steady-state situation. (C) if the government wanted to increase the growth rate per person output by an extra percentage through subsidy policies that affected capital growth alone, thus it would have to raise investment by $100 billion. (D) if the government wanted to increase the growth rate per person output by an extra percentage through subsidy policies that affected capital growth alone, thus it would have to raise investment by 40%. (E) None of the above.