Which of the four types of economic decision makers is most important?
a. firms, because they produce all goods and services in the economy
b. households, because they demand goods and services and supply resources
c. government, because it ultimately sets and enforces the "rules of the game"
d. government, because it steps in when there is market failure
e. the rest of the world, because there are over 150 countries
B
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Starting from long-run equilibrium, a war that raises government purchases results in ________ output in the short run and ________ output in the long run.
A. lower; potential B. higher; potential C. higher; higher D. lower; higher
In the above figure, the shift in the supply curve from S to S2 might reflect
A) a decrease in the cost of the tomato sauce used to produce pizza. B) a decrease in the number of pizza producers. C) an increase in the price of a pizza. D) an increase in income if pizza is a normal good. E) an increase in the price of a good that is a substitute for consumers.
Constant returns to scale means that, given any constant x > 0
A) xzF(xK, xNd)= zF(xK, xNd). B) xzF(xK, xNd) > zF(xK, xNd). C) xzF(xK, xNd) < zF(xK, xNd). D) xzF(xK, xNd) = zxF(K, Nd).
When the errors are heteroskedastic, then
A) WLS is efficient in large samples, if the functional form of the heteroskedasticity is known. B) OLS is biased. C) OLS is still efficient as long as there is no serial correlation in the error terms. D) weighted least squares is efficient.