Which of the following statements is true?
A) Marginal analysis is a key component in the process of optimization in levels.
B) Only direct costs are considered when the net benefits of the alternatives are calculated.
C) In both the techniques of optimization, all costs have to be converted to the same unit of measurement.
D) Optimization in levels calculates the change in net benefits when a person switches from one alternative to another.
C
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Which of the following is an important implication of the rational expectations argument?
A) Since people form their expectations using all available information, the use of monetary policies to eliminate output gaps will lead to inflation. B) Since any consistent set of monetary policies will be learned and anticipated by a population with rational expectations, policies designed to influence the economy to a level of production other than the potential real GDP will be ineffective. C) Although people may revise their expectations about the price level and future economic activity, they cannot act on these changes because in reality, wages and prices are sticky. Thus, policy intervention is necessary. D) Policymakers must constantly monitor economic activity and revise their economic policy goals to keep up with changing expectations of a population with rational expectations.
Assume that the demand curve for DVD players shifts to the left and the supply curve for DVD players shifts to the right, but the supply curve shifts less than the demand curve. As a result,
A) both the equilibrium price and quantity of DVD players will decrease. B) the equilibrium price of DVD players will decrease; the equilibrium quantity may increase or decrease. C) the equilibrium price of DVD players may increase or decrease; the equilibrium quantity will increase. D) the equilibrium price of DVD players will decrease; the equilibrium quantity will increase.