A signaling theory of education suggests that educational attainment
a. is a signal of high marginal productivity.
b. is correlated with natural ability.
c. increases the productivity of low-ability workers.
d. Both a and b are correct.
d
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A ________ system is one in which households pay the same percentage of their incomes in taxes regardless of their income level
A) progressive B) regressive C) proportional D) complementary
Countries tend to be classified as more or less developed based on
a. the literacy rate. b. the poverty rate. c. the level of income per capita. d. the types of goods they produce.
The only difference between a one- and two-sided hypothesis test is
A) the null hypothesis. B) dependent on the sample size n. C) the sign of the slope coefficient. D) how you interpret the t-statistic.
Suppose the adoption of a new software reduces the marginal cost of publishing books. For a given demand curve for books, this will be represented by:
a. an upward movement along the supply curve of books. b. a downward movement along the supply curve of books. c. an upward shift in the supply curve of books. d. a downward shift in the supply curve of books.