If A and B are two disjoint sets, and "Pr" represents the probability, then Pr[A and B] will be:
a. negative.
b. infinity.
c. unity.
d. zero.
D
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Suppose that a new drug has been approved to treat a life-threatening disease. The demand for that drug is shown on the graph below. Prior to approval of this drug, the only treatment for this condition was any one of several non-prescription, or over-the-counter, pain relievers. The demand for one brand of the several non-prescription pain relievers is also shown on the graph. 
At a price of $15 (the price at which the two demand curves intersect), the price elasticity of demand for the new drug is ________ the price elasticity of demand for the over-the-counter pain reliever.
A. less than B. the same as C. greater than D. the reciprocal of
Recall the Application. If country A has a lower overall income tax rate than country B, and labor can freely and easily move between the two countries, real wages in country A will tend to ________ and employment in country A will tend to ________
A) increase; increase B) decrease; decrease C) increase; decrease D) decrease; increase
A contractionary fiscal policy is a policy that:
A. reduces aggregate demand by decreasing taxes. B. reduces aggregate demand by decreasing government purchases. C. reduces aggregate demand by decreasing interest rates. D. reduces aggregate demand by decreasing money supply.
In the late 1990s, the Asian crisis reduced the demand for U.S. farm products, which weakened farm prices.
Answer the following statement true (T) or false (F)