The following does not represent a threat to internal validity of randomized controlled experiments:
A) attrition.
B) failure to follow the treatment protocol.
C) experimental effects.
D) a large sample size.
Ans: D) a large sample size.
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The biggest single factor affecting family income distribution is the
A) householder's age. B) householder's marital status. C) household size. D) householder's education.
Consumer surplus measures
A) the extra amount that a consumer must pay to obtain a marginal unit of a good or service. B) the excess demand that consumers have when a price ceiling holds prices below their equilibrium. C) the benefit that consumers receive from a good or service beyond what they pay. D) gain or loss to consumers from price fixing.
Suppose consumer income increases. If grass seed is a normal good, the equilibrium price of grass seed will
a. decrease, and producer surplus in the industry will decrease.
b. increase, and producer surplus in the industry will increase.
c. decrease, and producer surplus in the industry will increase.
d. increase, and producer surplus in the industry will decrease.
If aggregate demand increases and aggregate supply decreases, the price level ________.
A. will decrease, but real output may increase, decrease, or remain unchanged B. will increase, but real output may increase, decrease, or remain unchanged C. and real output will both decrease D. and real output will both increase