40. Which of the following statement about coefficient of determination $R^2$ is incorrect?
(A) As the number of explanatory variables increases, \( R^2 \) may increase.
(B) It provides the percentage of explained variance in the response variable using the regression model.
(C) Its value must fall in 0 and 1.
(D) The correlation of coefficient must equal to \( R^2 \).
(E) When \( R^2 = 1 \), the response variable has an exact linear relationship with the explanatory variable in the simple regression model.

1. Refer to Table 1. Suppose the bank faces a reserve requirement of 10 percent. Starting from the situation as depicted by the T-account, a customer deposits an additional $50,000 into his account at the bank. If the bank takes no other action it will (A) have $65,000 in excess reserves. (B) have $55,000 in excess reserves. (C) need to raise an additional $5,000 of reserves to meet the reserve requirement ratio (D) None of the above is correct.

2. Refer to Table 1. If the bank is holding $4,000 in excess reserves, then the reserve requirement with which it must comply is (A) 4 percent. (B) 6 percent. (C) 12 percent. (D) 14 percent.

3. An MP3 player in Singapore costs 200 Singaporean dollars. In the U.S. it costs 100 US dollars. Which of the following is correct? (A) if the nominal exchange rate is 2.0 Singaporean dollars per U.S. dollar, purchasing power parity holds. (B) if the nominal exchange rate is 1 Singaporean dollar per U.S. dollar, purchasing power parity holds. (C) if the nominal exchange rate is .50 Singaporean dollar per U.S. dollar, purchasing power parity holds. (D) purchasing power parity does not hold at any of the above exchange rates.

4. If the reserve ratio is 20 percent, then $100 of new reserves can generate (A) $60 of new money in the economy. (B) $250 of new money in the economy. (C) $500 of new money in the economy. (D) $2,000 of new money in the economy.

5. Other things the same, automatic stabilizers tend to (A) raise expenditures during expansions and recessions. (B) lower expenditures during expansions and recessions. (C) raise expenditures during recessions and lower expenditures during expansions. (D) raise expenditures during expansions and lower expenditures during recessions.

6. Suppose the economy is in long-run equilibrium. If there is a sharp decline in the stock market combined with a significant increase in immigration of skilled workers, then in the short run, (A) real GDP will rise and the price level might rise, fall, or stay the same. In the long-run, real GDP will rise and the price level might rise, fall, or stay the same. (B) the price level will fall, and real GDP might rise, fall, or stay the same. In the long-run, real GDP and the price level will be unaffected. (C) the price level will rise, and real GDP might rise, fall, or stay the same. In the long run, real GDP will rise and the price level will fall. (D) the price level will fall, and real GDP might rise, fall, or stay the same. In the long run, real GDP will rise and the price level will fall.

7. GDP is not a perfect measure of well-being; for example, (A) GDP excludes the value of volunteer work. (B) GDP does not address the distribution of income. (C) GDP does not address environmental quality. (D) All of the above are correct.

8. A country with a relatively low level of real GDP per person is considering adopting two policies to promote economic growth. The first is to increase barriers to trade. The second is to restrict foreign portfolio investment. Which of these policies would most economist think would promote growth? (A) both the first and the second (B) the first but not the second (C) the second but not the first (D) neither the first nor the second

9. Other things the same, if the price level rises, people (A) increase foreign bond purchases, so the supply of dollars in the market for foreign-currency exchange increases. (B) increase foreign bond purchases, so the supply of dollars in the market for foreign-currency exchange decreases. (C) decrease foreign bond purchases, so the supply of dollars in the market for foreign-currency exchange increases. (D) decrease foreign bond purchases, so the supply of dollars in the market for foreign-currency exchange decreases.

10. The phenomenon of crowding-out suggests that the positive impact of budget deficits on economic activity are reduced by  _______ .(A) the impact produced by government spending on the environment. (B) an increase in national savings. (C) the interest rate effects associated with federal deficits. (D) the increase in pork barrel projects deficit spending entails.

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