Which one of the following is the most accurate definition of economics?
a. Economics is the study of stocks and bonds.
b. Economics is the study of how people allocate unlimited resources.
c. Economics is the study of how consumers choose to spend their income.
d. Economics is the study of how society chooses to allocate scarce resources.
d
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Suppose that P × Y is $5,000 million a year and the quantity of money is $500 million. Then the velocity of circulation is
A) 50. B) 10. C) 500. D) 20. E) 2,500,000.
Publishers charge much higher prices for a book in hardcover than for the same book in paper cover because
A) the demand for hardcover books is less elastic at the same price. B) the marginal cost of attaching hardcovers is very high. C) there are larger sunk costs in the production of hardcover editions. D) they have less bargaining power against bookstores in marketing paperback editions. E) they want to subsidize students.
Which of the following questions or statements regarding medical school is normative?
A) How do changes in expected future incomes affect the decisions of medical students about which specialty to choose? B) What role does tuition play in a student's decision about whether to attend medical school? C) Have tuition increases had a large effect or a small effect on the number of applications to medical school? D) Medical students who enter specialized fields make a larger contribution to society than do student who enter primary care.
The __________ problem in the market for used cars is capable of collapsing the market for __________.
A. adverse selection; good used cars B. adverse selection; lemons C. moral hazard; good used cars D. moral hazard; lemons