Level of autonomous consumption and mpc

Question

Answer the next two questions using the information below:

Consider an economy described by the following parameters:

G=1000

X-M=50

I=1400

T=500

C=2000+0.9(Y-T)

Where G is government expenditure, (X-M) is net exports, I is the level of planned investment, T are lump-sum taxes on income, C is household consumption and (Y-T) is disposable income.

Problem 1) The level of autonomous consumption and the MPC in this economy are, respectively:

1. 2000 and 0.9.
2. 1550 and 0.9.
3. 1450 and 9.
4. 1550 and 0.1.

Problem 2) The equilibrium level of income is:

1. $35,500.
2. $40,000.
3. $30,500.
4. $40,500.

Answer the next three questions using the information below:

Consider the following information about the country of Simpleland

G = $600

T = $800

I = $1000 - 5000 i_R

S = $320 + 1000 i_R

(Hint: in this problem, the real interest rate is written as a decimal:  e.g., if the real interest rate is 10%, it is written as i_R=0.10).

Problem 3) What is the equilibrium real interest rate?

1. 4%
2. 6%
3. 8%
4. 10%

Problem 4) In equilibrium, what is the amount of injections in this economy?

1. $2,000
2. $1,500
3. $1,200
4. $1,000

Problem 5) Suppose that the government decides to increase G by $120. Assuming that aggregate income does not change, which of the following is the most plausible effect of this policy?

1. The rise in G partially crowds out private sector spending. Indeed, because of the increase in the equilibrium interest rate, private investment increases by $100.
2. The rise in G completely crowds out private sector spending. Indeed, because of the increase in the equilibrium interest rate, investment decreases by $120.
3. The rise in G partially crowds out private sector spending. Indeed, because of the increase in the equilibrium interest rate, private consumption increases by $20 and private investment decreases by $ 100.
4. The rise in G completely crowds out private sector spending. Indeed, because of the increase in the equilibrium interest rate, private consumption decreases by $20 and private investment decreases by $ 100.

Problem 6) The short-run Keynesian model is in equilibrium when:

1. There is no unemployment.
2. There is no cyclical unemployment.
3. The level of inventories is constant and equal to zero.
4. Aggregate expenditure equals aggregate production.

Problem 7) Which of the following is not true? A difference between the long-run Classical Model and the short-run Keynesian Model is that:

1. While an increase in savings is always good in the long-run, it might create a recession in the short-run.
2. In the Classical Model the economy operates automatically at potential GDP while this is not true in the Keynesian model.
3. In contrast to the long-run Classical Model, in the short-run Keynesian Model there is always need for government intervention in order to maintain full employment.
4. In contrast to the Keynesian Model, in the Classical Model government policy is ineffective.

Answer the next two questions using the information below:

Real interest rate (percent per year)	Planned Investment (billions of 2003 dollars)	Private saving (billions of 2003 dollars)	Net taxes (billions of 2003 dollars)	Government purchases (billions of 2003 dollars)
2	600	200	400	200
4	500	300	400	200
6	400	400	400	200
8	300	500	400	200
10	200	600	400	200

Problem 8) When the real interest rate is 8%, then the

1. Total supply of funds is equal to $500 billion and budget surplus is $200 billion.
2. Total supply of funds is equal to $700 billion and budget deficit is $200 billion.
3. Total supply of funds is equal to $700 billion and budget surplus is $200 billion.
4. Total supply of funds is equal to $500 billion and budget deficit is $200 billion.

Problem 9) The equilibrium interest rate is

1. 4 %
2. 6 %
3. 8 %
4. 2 %

Problem 10)  In the Keynesian model, cyclical unemployment is caused by

1. a negative spending shock.
2. a positive spending shock.

Problem 11)  When aggregate expenditure is less than aggregate income, inventories

1. decrease.
2. increase.

Problem 12)  The MPC is 0.8. Holding everything else constant, if government purchases increase by $1 and taxes decrease by $2, the short-run equilibrium level of output will increase by

a. $1.

b. $3.

c. $13.

d. $15.

Problem 13) If autonomous consumption is $1,000, the MPC is 0.75, taxes are $500, investment spending is $800, and government purchases equal $500, what is equilibrium GDP? (Assume net exports equal 0.)

a. $1,925

b. $9,200

c. $2,567

d. $7,700

14)  In the simple short-run Keynesian model presented in Chapter 10, if GDP=$5 trillion and aggregate expenditure=$4.6 trillion, we would expect

a. prices to fall until the additional $0.4 trillion of output was sold.

b. prices to rise.

c. output to rise as businesses anticipate that buyers will spend more in the future to compensate for weak spending in this period.

d. inventories to rise by $0.4 trillion.

Use the information below to answer the next two questions:

Y	T	C
0	10	16
100	10	56
200	10	96
300	10	136

Problem 15)  What is the consumption function as a function of aggregate income?

a. C=20+.4(Y-T)

b. C=16+.4(Y-T)

c. C=16+.4Y

d. C=24+.4Y

Problem 16)  What is the saving function as a function of disposable income?

a. S=-20+.6(Y-T)

b. S= -16+.6(Y-T)

c. S= -16+.6Y

d. S= -24+.6Y