Which statement is true?
A. Industry X is more concentrated than Industry Y.
B. Industry Y is more concentrated than Industry Z.
C. Industry Z is more concentrated than Industry X.
D. Industries X, Y, and Z have the same concentration ratio.
C. Industry Z is more concentrated than Industry X.
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All of the following are included in gross private domestic investment expenditure EXCEPT a
A) business's purchase of a fleet of cars. B) household's purchase of a new house. C) business's purchase of another company's stock. D) a retail store's purchase of shoes to add to its inventory.
If unemployment is at the natural rate, then there
A) is no cyclical unemployment. B) is no frictional unemployment. C) will be cyclical and frictional unemployment but not structural unemployment. D) will be only cyclical unemployment.
The federal government employs more civilians than state and local governments
a. True b. False Indicate whether the statement is true or false
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