Which of the following is true of sub-Saharan Africa?
a. The poverty rate in the region is low.
b. The region has received more foreign aid than any other area of the world.
c. Most of the countries in the region rank among the freest economies in the world.
d. The poverty rate in the region is the lowest of any region in the world, and the rate has declined sharply during the past quarter of a century.
B
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The market demand for wheat is Q = 100 - 2p + 1pb, where pb is the price of barley. If the price of wheat is $2 and the price of barley is $4, the cross-price elasticity of demand
A) equals (4/100). B) equals (-2/100). C) equals (-4/25). D) cannot be calculated without more information.
Researchers estimate QALYs in a number of different ways. One popular approach is called
a. the probability approach b. the QoL approach c. the standard gamble d. the standard measure of well-being e. the utility of life approach