If the number of workers in an economy doubled, all other inputs stayed the same, and there were constant returns to scale, productivity would
a. fall to less than one-half of its former value.
b. fall, but it would still be greater than one-half of its former value.
c. stay the same.
d. rise but less than double.
b
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The median-voter theorem can help explain one reason why politicians tend to change their position on a given issue over the course of an election from:
A. extreme to moderate. B. moderate to extreme. C. extreme to more extreme. D. one extreme to the other.
In the poorest nations, agriculture is likely to contribute as much as ________ percent to total output.
A. 55 B. 10 C. 30 D. 85
Suppose that a large and a small wind turbine have similar installation, operating, and maintenance costs, but a large turbine has four times the generating capacity but costs less than three times as much as a small turbine. The average cost of generating electricity with wind is:
A. constant at each output. B. increasing as output increases. C. decreasing as output increases. D. at first decreasing and then increasing as output rises.
Of the following high-income countries, which has the highest female life expectancy at age 65?
A) Canada B) Japan C) the United Kingdom D) the United States