Question

MACROECONOMICS given: Crowding out with algebra. Consider an economy described by the following model. Y =...

MACROECONOMICS

given:

Crowding out with algebra. Consider an economy described by the following model.

Y = K1/3L2/3
K = 1000; L = 1000
G = 100
T = 100
C = 250 + 0.5(Y-T)
I = 600 – 100r

i. Calculate the equilibrium real interest rate, national saving, public saving, private saving, consumption, output, and investment. List your numbers out like this:

Y = 1000

r = 4

S = 200

Spub = 0

Spriv = 200

C = 700

I = 200

ii. Suppose the government increases G to 250. Repeat your calculations to find the new real interest rate, national saving, and investment. You only need to report the numbers since your method should be the same as in part (i).

Y = 1000

r = 5.5

S = 50

Spub = -150

Spriv = 200

C = 700

I = 50



Question:

If modify the consumption function to it depends on r, as discussed briefly in the textbook, we can make S depend on r which is more realistic.

i. Which consumption function would make S(r) increase with the real interest rate? Briefly explain your choice.
C = 450 + 0.5(Y-T) – 50r                OR         C = 50 + 0.5(Y-T) + 50r

ii. Is there more, less, or the same amount of crowding out when G increases in this modified version? (In other words, repeat question 9 but with the new S(r) function.) Explain!

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