An economic model is
A) a generalization that summarizes all the normative assumptions we make about a particular issue.
B) a description of some aspect of the economic world that includes only those features of the world that are needed for the purpose at hand.
C) a statement that describes how the world should be.
D) a collection of facts that describe the real world.
B
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From the manager's perspective:
A) it is important to treat implicit costs as explicit in order to make sound strategic decisions. B) implicit costs are simply a theoretical construct and should be ignored in the decision-making process. C) only explicit costs matter because accounting profit is based on explicit costs. D) there is no difference between implicit and explicit costs. As such, treating implicit costs as explicit would result in double counting and an overstatement of total costs.
University researchers create a positive externality because what they discover in their research labs can easily be learned by others who haven't contributed to the research costs. Suppose that the federal government gives grants to these researchers equal to the their per-unit production externality. What is the relationship between the equilibrium quantity of university research and the
socially optimal quantity of university research produced? a. The equilibrium quantity is greater than the socially optimal quantity. b. They are equal. c. The equilibrium quantity is less than the socially optimal quantity. d. There is not enough information to answer the question.