The OLS estimator for the multiple regression model in matrix form is
A) (X'X)-1X'Y
B) X(X'X)-1X' - PX
C) (X'X)-1X'U
D) (X?-1X)-1X?-1Y
Answer: A
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According to the graph shown, if the government decides to increase taxes, it is most likely at equilibrium:
A. A B. B C. C D. D
In the United States, the purchasing power of money is determined by:
A. the underlying precious metals that back each unit of currency. B. the value of U.S. treasury bonds that back each unit of currency. C. its acceptability. D. Congress, which controls the money supply.
The MFC curve increases for a monopsonist because:
A. as more workers are hired, all workers receive higher wages. B. output price rises as a firm's market power increases. C. hiring more workers does not affect wages. D. the later workers hired are less productive.
Energy efficiency requires that we employ:
A. Only the lowest-cost energy inputs B. Only domestic energy sources C. A mix of energy inputs, some of which are more expensive than others D. Imported energy inputs and save domestic resources for future use