A firm is experiencing theft problems at its warehouse. A consultant to the firm believes that the dollar loss from theft each week (T) depends on the number of security guards (G) and on the unemployment rate in the county where the warehouse is located (U measured as a percent). In order to test this hypothesis, the consultant estimated the regression equation T = a + bG + cU and obtained the following results: 
Based on the above information, which of the following is correct at the 1% level of significance?
A. The estimates of the parameters a, b, and c are all statistically significant because the absolute values of their t-ratios exceed 2.797.
B. The critical value of t is 2.797.
C. The regression equation as a whole is statistically significant because the p-value of F is smaller than 0.01.
D. The estimates of the parameters a, b, and c are all statistically significant because the p- values for, a? , b? and c? are all less than 0.01.
E. all of the above
Answer: E
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Suppose the equilibrium price of a gallon of milk is $4. If the government imposes a price floor of $5 per gallon of milk, the
A) quantity supplied of milk falls short of the quantity demanded. B) quantity supplied of milk exceeds the quantity demanded. C) supply increases. D) demand decreases. E) price of milk remains $4 per gallon.
In mid-2012 Delta increased the price of a New York to LA ticket by 10 percent. As a result of this price hike, there was a ________ shift in the demand curve for a ticket on Continental because the price of a ________ had risen
A) rightward; complement B) leftward; substitute C) leftward; complement D) rightward; substitute
The greater the social immobility is within a country, the greater the chance that human talent and skills will not go to waste
Indicate whether the statement is true or false
A firm's net income is its revenue minus its costs of production.
Answer the following statement true (T) or false (F)