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__def961f9-c383-4603-be40-6b7c9396899a.PNG" style="vertical-align:-9px;" height="25px" width="17px" /> is omitted from the equation. The bias in 
is negative if _____.
A. 
>0 and 
and 
are positively correlated
B. 
<0 and 
and 
are positively correlated
C. 
=0 and 
and 
are negatively correlated
D. 
=0 and 
and 
are negatively correlated
Answer: B
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Your roommate is having trouble grasping how monetary policy works. Which of the following explanations could you use to correctly describe the mechanism by which the Fed can affect the economy through monetary policy? Increasing the money supply
A) lowers the interest rate, raises the value of the dollar, lowers the prices of exports, and raises net exports. B) raises the interest rate and consumers decrease spending on durable goods. C) causes people to spend more because they know prices will rise in the future. D) lowers the interest rate, and firms increase investment spending.
An economy is operating with optimum efficiency if
A. the price of the product is greater than marginal cost. B. the production of more of commodity A entails the production of less of commodity B. C. marginal cost of output is greater than marginal utility of output. D. an increase in output would result in a decrease in average cost per unit.
The price of Y is $10.According to the above figure, which of the following are points on the consumer's demand curve for X?
A. $2, 300 units B. $5, 120 units C. $3, 120 units D. both a and b E. both c and d
When the own price elasticity of good X is ?3.5, then total revenue can be increased by:
A. decreasing the quantity supplied. B. decreasing the price. C. increasing the price. D. neither increasing the price, decreasing the price, nor decreasing the quantity supplied.