英⽂版宏观经济典型例题附带答案解析Macroeconomics 1、
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2、
3、
4、Abby consumes only apples. In year 1, red apples cost 1 dollar each, green apples cost 2 dollar each, and Abby buys 10 red apples. In year 2, red apples cost 2 dollar, green apples cost 1 dollar, and Abby buys 10 green apples.
/doc/94a02097720abb68a98271fe910ef12d2bf9a95f.html pute a consumer price index for apples for each year. Assume that year 1is
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the ba year in which the consumer basket is fixed. How does your index change from year 1 to year 2?
/doc/94a02097720abb68a98271fe910ef12d2bf9a95f.html pute Abby’s nominal spending on apples in each year. How does it change
from year 1 to year 2?
/doc/94a02097720abb68a98271fe910ef12d2bf9a95f.html ing year 1 as the ba year, compute Abby’s real spending on apples in each
year. How does it change from year 1 to year 2?
d.Defining the implicit price deflator as nominal spending divided by real
yth
spending, compute the deflator for each year. How does the deflator change
from year 1 to year 2?
Suppo that Abby is equally happy eating red or green apples. How much has the true cost of living
incread for Abby? Compare this answer to your answers to parts (a) and (d). What does this example tell you about Laspeyres and Paasche price indexes?
a.
According to the CPI(消費物價指數), prices have doubled.
b. N-spending is the total value of output produced in each year. In Y1 and Y2, Abby buys 10 apples for $1 each, so her N-spending remains constant at $10.
c. R-spending is the total value of output produced in each year valued at the prices prevailing in Y1.In Y1,the ba year,her R-spending equals her N-spending of $10. In year 2, she consumes 10 green apples that are each valued at their Y1 price of $2, so her real spending is $20.
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Hence, Abby’s real spending ris from $10 to $20.
d.
Thus, the implicit price deflator suggests that prices have fallen by half.
e. If Abby thinks of red apples and green apples as perfect substitutes, then the cost of
silk
living in this economy has not changed.
没关系日语>olympic gamesAccording to the CPI, however, the cost of living has doubled. In contrast to the CPI, the implicit price deflator estimates the cost of living has halved.
Thus, the CPI, a Laspeyres index, overstates the increa in the cost of living and the deflator, a Paasche index, understates it.
This chapter of the text discuss the difference between Laspeyres and Paasche indices in more d
etail.
5、
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6、Suppo that an economy’s production function is Cobb-Douglas with
α=.
parameter 0.3
a. What fractions of income do capital and labor receive?
introduction是什么意思b. Suppo that immigration increas the labor force by 10 percent. What happen to total output? The rental price of capital? The real wage?
c. Suppo that a gift of capita form abroad rais the capital stock by 10 percent. What happens to total output(in percent). The rental price of capital? The real wage?
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d. Suppo that a technological advance rais the value of the parameter A by 10 percent. What happens to total output? The rental price of capital? The real wage?
