DVD players have become more abundant, and cheaper, over the past few years. Explain the decline in DVD player prices
A) DVD manufacturers have become less interested in trying to maximize their profits.
B) The demand curve for DVDs has shifted to the left.
C) The supply curve for DVDs has shifted to the right.
D) The supply curve for DVDs has shifted to the left.
C
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Labor force productivity has increased from $30 per hour to $32 per hour over the past year. This could result from
A) an increase in real GDP with no change in the aggregate hours or a decrease in aggregate hours with no change in real GDP. B) only an increase in real GDP. C) an increase in population. D) an increase in the labor force participation rate. E) only a decrease in aggregate hours.
The goals of bank asset management include
A) maximizing risk. B) minimizing liquidity. C) lending at high interest rates regardless of risk. D) purchasing securities with high returns and low risk.
The Federal Reserve
a. designs tax policy. b. enforces the nation's antitrust laws. c. sets the nation's monetary policy. d. analyzes data on workers.
Suppose the variable 
has been omitted from the following regression equation, 
is the estimator obtained when
src="@@PLUGINFILE@@/ppg__cognero__Ch_03_Multiple_Regression_Analysis_Estimation__media__70014c5f-f839-4657-b538-a779591b542f.PNG" style="vertical-align:-9px;" height="25px" width="17px" /> is omitted from the equation. If 
is said to _____.
A. have an upward bias
B. have a downward bias
C. be unbiased
D. be biased toward zero