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ミクロ経済 小Quiz(最終)

1.How do we calculate the marginal revenue product of a factor? A)The total revenue divided by the number of factors B)The change in total revenue divided by the change in the number of factors C)The change in total physical product divided by the change in quantity D)The change in the total physical product divided by the change in the number of factors Cを選択しました。 MRP=Change in Total revenue ÷ Unit change in resource quantity 2. Which of these will cause an decrease in the demand for carpenters? A)An decrease in the demand for furniture B)An improvement in the technology used to produce furniture C)An increase in the amount of capital that the furniture firm uses D)More education and training for the workers E)All of the above D=MRPの関係図より、Aを選択しました。 3. How many workers would be hired by this firm? Laborers...Output...Price of output....Marginal cost of labor 1...............10..............3....................18 2...............18..............3....................18 3...............25..............3....................18 4...............31..............3....................18 5...............36..............3....................18 A)1 B)2 C)3 D)4 E)5 Eを選択しました。 4. Firms will choose to produce using more capital if a) the marginal product of labor divided by the price of labor is greater than the marginal product of capital divided by the price of capital b) the marginal product of labor divided by the price of labor is less than the marginal product of capital divided by the price of capital c) the marginal product of labor divided by the price of labor is equal to the marginal product of capital divided by the price of capital Cを選択しました。 5. The demand for a resource will be elastic if a) the demand for the product it produces is inelastic b) there are few substitutes for the resource c) the cost of the resource is a high proportion of the total production cost Cを選択しました。The larger the proportion of total production costs accounted for by a resource の一文より 6. which of these occupations has the highest expected percentage growth rate over the next few years. a) physician assistants b) order clerks c) computer operators d) athletic trainers e) biomedical engineers テキスト内にあるpercentage growth rate より aは39%、bは-26% cは-18% dは37% eは72%より Eを選択しました。 助言いただければ幸いです。

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あなたの答案で問題なのは以下のとおり。 1. MRPL = MR・MPL=(ΔR/Δy)(Δy/ΔL)=ΔR/ΔL 労働の限界収入生産物=限界収入×労働の限界生産物=収入の変化量÷労働の変化量 となります。労働とは別の生産要素の限界収入生産物の場合は労働のところへその生産要素(資源)がはいります。 問1の選択肢のところに、適切なものは見当たりません!あなたの答えCはもちろん正しくありません。もし選択肢(B)を B)The change in total revenue divided by the change in the number of factors ⇒ B)The change in total revenue divided by the change in the quantity of a factor のように変えるなら、正解に近くなります。 3.利潤最大化条件 P・MPL = W 限界生産物の価値=生産要素の価格(生産要素の限界費用)を用いる。労働の限界生産物は労働を3単位から4単位増やすと、生産物(output)は25から31へ6だけ増える。つまりMPL=6、このとき  P・MPL =3×6=18=W が成り立つ。つまり、正解はD(つまり、労働を4単位雇用すれば利潤は最大化される。) 4.MPL/w>MPK/rのときは、労働の価格が資本の価格より相対的に安いのだから、労働の雇用を増やし、資本の使用を減らすなら、当該生産物を生産する費用が下がることになる。よって、正解はA. あとはあなたの答えで合っているようです。

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