In: Economics
plese answer all 7 multipple choice questions
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 1.  | 
 Which of the following must occur to sustain economic growth in the long run?  | 
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 A) technological progress  | 
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 B) capital accumulation  | 
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 C) a higher saving rate  | 
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 D) all of the above  | 
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 2.  | 
 Constant returns to scale implies that if N and K both increase by 3% that  | 
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 A) Output (Y) will increase by 3%.  | 
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 B) Y/N will increase by 3%.  | 
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 C) Y/N will increase by less than 3%.  | 
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 D) the capital-labor ratio will increase by 3%.  | 
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 3.  | 
 A reduction in the saving rate will not affect which of the following variables in the long run?  | 
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 A) output per worker  | 
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 B) the growth rate of output per worker  | 
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 C) the amount of capital in the economy  | 
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 D) capital per worker  | 
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 4.  | 
 Which of the following statements is always true?  | 
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 A) Investment equals depreciation.  | 
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 B) Investment equals the capital stock minus depreciation.  | 
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 C) The capital stock is equal to investment minus depreciation.  | 
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 D) Any change in the capital stock is equal to investment minus depreciation.  | 
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 5.  | 
 The capital-labor ratio will tend to decrease over time when  | 
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 A) investment per worker equals saving per worker.  | 
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 B) investment per worker is less than saving per worker.  | 
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 C) investment per worker exceeds depreciation per worker.  | 
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 D) saving per worker equals depreciation per worker.  | 
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 6.  | 
 If the saving rate is 1 (i.e., s = 1), we know that  | 
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 A) K/N will be at its highest level.  | 
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 B) Y/N will be at its highest level.  | 
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 C) C/N = 0.  | 
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 D) all of the above  | 
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 7.  | 
 Which of the following will cause an increase in output per effective worker?  | 
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 A) an increase in population growth  | 
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 B) an increase in the rate of depreciation  | 
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 C) a reduction in the saving rate  | 
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 D) an increase in the saving rate  | 
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