Imports account for approximately ___ percent of U.S. GDP.
A. 2
B. 7
C. 14
D. 25
C. 14
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Prove that the total cost curve and the total variable cost curve have the same slope
What will be an ideal response?
If variance of an independent variable in a regression model, say x1, is greater than 0, or Var(x1) > 0, the inconsistency in 
1 (estimator associated with x1) is negative, if x1 and the error term are positively related.
Answer the following statement true (T) or false (F)
Which of the following measures does not help promote technological progress?
(A) Reducing the scale of the market for a new product. (B) Training programs for workers. (C) Increased wages for researchers. (D) Issuing a patent to a company that invents a new product.
The period from 1950 to 1975 was a period of
A. very low levels of innovation and low productivity. B. rapidly increasing technological advancements. C. information revolutions. D. few big technological breakthroughs.