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MGEA06H3 Lecture Notes - Interest Rate, Keynesian Cross, Automatic Stabilizer

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olivepig122
22 Feb 2013
School
UTSC
Department
Economics for Management Studies
Course
MGEA06H3
Professor
Iris Au

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MGEA06H3 Full Course Notes
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MGEA06H3 Full Course Notes
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Document Summary

Chapter 23: fiscal policy and aggregated supply to demand model. The size of the government and the size of the multiplier. It turns out the size of the government/public sector would affect the fluctuations of y* when the economy experiences exogenous shocks. A smaller government has lower tax rate, lower (transfer) benefit reduction rate, and smaller government spending. We want to see what happens to the equilibrium output and multiplier. Di = y 3/28y + (80 1/28y) C = 20 + 7/8 (80 + 6/7y) Ae = (90 + 3/4y) + 100 + 110 + 120 (1/8)y. When the government goes smaller, the multiplier becomes bigger. A larger government has higher tax rate, higher (transfer) benefit reduction rate, and larger government spending. Ae = c + i + g + x im. When the government becomes larger, the multiplier becomes smaller.

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Related Questions

The Modified Keynesian Model

Y = C + I + G + X – IM … equilibrium condition in a 4-sector model where:

C = 150 + 0.9DI … consumption function

I = 50 … autonomous investment

G = 100 … autonomous government spending

X = 200 … autonomous exports

IM = 100 … autonomous imports

And also:

DI = Y – T + Tr T = 0 … autonomous taxes

Tr = 0 … autonomous transfer payments

YF = 5000 … full-employment Y

1. Solve for the equilibrium level of real output/income (Y*) in this economy.

2. Given the model above, net exports equal $________. Does this represent a trade deficit or trade surplus?

3. Given the model above, the federal budget has a (deficit/surplus) equal to $________.

4. What is the value of the MPC? … the value of the MPS?

5. Calculate the “oversimplified” expenditure multiplier.

6. Suppose that full-employment (YF) equals $5000. Is there a recessionary or inflationary output gap?

7. (Refer to question “6”.) How much is the gap equal to?

8. Suppose the government chooses to eliminate the gap by using expansionary fiscal policy (i.e., increasing G). Given the numbers above, by how much would government spending (G) need to increase to achieve the goal of full-employment?

9. Suppose instead that the government decided to lower taxes to eliminate the output gap in question “6”. How much would taxes need to fall to achieve the goal of full-employment?

10. Which action (raising G or lowering T) has the largest effect on the federal budget deficit and the national debt?

11. Suppose the national debt equaled $6000 before the tax cut (refer to question “9”). What would be the value of the national debt after this policy action?

In the country of Utopia, the structure of the economy is described as the following:

Y = C + I + G + (X – M)

C = C0 + (mpc)(DI)

I = I0 + (mpi)(Y)

M = M0 + (mpm)(DI)

DI = Y – T

T = (t)(Y)

Where Y is the level of real GDP in the economy, DI denotes the disposable income in the economy, C represents the level of consumption in the economy, C0 is the autonomous consumption level, mpc denotes the marginal propensity to consume, I is the level of investment in the economy, I0 characterizes the autonomous investment, mpi is the marginal propensity to invest, G characterizes the level of government expenditure, X is the level of export from the country, M represents the amount of import in the country, M0 is the level of autonomous import, mpm denotes the marginal propensity to import, T is the amount of tax imposed in the country, and t represents the average tax rate in the economy.

After extensive research, the economists in Utopia believe that the following values (all the dollar values are in number of millions) can be assigned to the structure of the economy, C0 = $500; mpc = 0.8; I0 = $200; mpi = 0.2; G = $400; X = $300; M0 = $100; mpm = 0.1; and t = 0.25. The Utopian economists further believe that the level of potential GDP in the country is $4,000.

Questions:

1. What is the demand side equilibrium level of real GDP in the country? Please show your calculations.

2. Is the overall Utopian economy in equilibrium? Elaborate your answer.

3. If the economy is not in equilibrium, what will happen eventually? Explain your answer.

4. What is the value of the overall multiplier? Please show your calculations and explain the value.

The country of Utopia is probably experiencing a recessionary pressure in its economy now. The economists are suspecting that, since the latest estimates of mpc, mpi, and mpm indicate that their estimated values have gone down to 0.65, 0.15, and 0.05 respectively.

5. What is the demand side equilibrium level of real GDP in the country now? Please show your calculations.

6. Is the overall Utopian economy now in equilibrium? Elaborate your answer.

7. If the economy is not in equilibrium now, what will happen eventually? Explain your answer.

8. What is the adjusted value of the overall multiplier? Please show your calculations and explain the value.