If there are ten firms in a market and each has an equal market share, the Herfindahl-Hirschman Index (HHI) is ________.
A) 10,000 B) 1,000 C) 100 D) 1,500
B) 1,000
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Market demand curves are found by
A. vertically summing individual demand curves. B. horizontally summing individual demand curves. C. summing individual demand curves in a parallel fashion. D. adding the slopes of individual demand curves.
Europe may not be an optimum currency area because
A) people speak different languages. B) workers are not very mobile. C) the countries do not trade very much with each other. D) financial markets are weak.
If the government increases spending but does not raise taxes
A) aggregate demand will increase without any effect on the price level. B) borrowing by the government will take place. C) the government will have to sell some assets, such as oil and national parks. D) the government will have to either lower expenditures or raise taxes the next year.
Refer to the following computer output from estimating the parameters of the nonlinear modelY = aRbScTdThe computer output from the regression analysis is: 
Based on the info above, the estimated value of a is
A. -0.6931 B. 2.66 C. 0.50 D. -3.67