The linear regression equation, Y = a + bX, was estimated. The following computer printout was obtained: 
Given the above information, which of the following statements is correct at the 1% level of significance?
A. â is statistically significant, but b? is not.
B. b? is statistically significant, but a? is not.
C. Neither â nor b? is statistically significant.
D. Both â and b? are statistically significant.
Answer: A
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Based on the above figure, if countries "A" and "B" faced the production possibilities curves above, both countries would benefit if
A) they did not trade. B) "A" produced industrial goods, and "B" produced agricultural goods. C) "B" produced industrial goods, and "A" produced agricultural goods. D) they both produced both industrial and agricultural goods.
Which of the following is true when an economy is in long-run equilibrium? a. Actual output can exceed potential output
b. Potential output can exceed actual output. c. Actual output must equal potential output. d. Real GDP must equal nominal GDP. e. Expected price level can exceed actual price level.