A patent is a government-imposed entry barrier because
A) it allows a firm to achieve economies of scale.
B) it is a key input owned by the firm that is granted the patent.
C) it limits the quantity of a good that can be imported into a country.
D) it gives a firm the exclusive right to a new product for a period of 20 years from the
date the product is invented.
The Gini coefficient for the United States in 1980 was 0.403. In 2011, the coefficient
was equal to 0.477. This means that
A) per capita income in the United States rose from 1980 to 2011.
B) there was a decrease in the amount of government transfer payments from 1980 to
2011.
C) cuts in federal income tax rates in the early 1980s and 2001 helped to reduce income
inequality.
D) income inequality increased from 1980 to 2011.
Which of the following is one reason for the decline in aggregate demand that led to the