ECON 1BB3 Lecture Notes - Aggregate Supply, Aggregate Demand, Business Cycle

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17 Apr 2014

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ECON 1BB3 Full Course Notes

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Business cycles: economic fluctuations are irregular and unpredictable, economic variables fluctuate together. Three variables that we are trying to determine / predict in the aggregate demand and. Aggregate supply model are: y (real gdp), p (overall price level), and unemployment. If gdp (increases), it means firms produce lots of stuff, it needs lots of workers. If gdp (decreases), it means firms produce less stuff, it needs less workers. Recession: when gdp goes down one quarter, and goes back up one quarter, going from peak to trough in a stylized business cycle diagram. Expansion: the economy is growing, gdp is growing over time, going from trough to peak in a stylized business cycle diagram. Review (chapter 7 and chapter 5, make sure know each variable stands for) Ad (aggregate demand): y = c + i + g + nx. Lras (long-run aggregate supply): y = a x f (k, l, h, n)

Related Questions

Question 3

According to Joseph Schumpeter, the theory of creative destruction describes a process by which

	A	some new products unleash a gale of destruction that drive other new products out of the market.
B		new products unleash a gale of destruction that drives old products out of the market.
C		new products are created by the destruction of capital.
D		the creation of new products never involves the destruction of old products.

Question 4

Which of the following countries had the highest GDP per capita in 2012?

		A Qatar
B		United States
C		Japan
D		Norway

Question 5

________ save a ________ of their income. This ________ capital in their economy and raises economic growth.

	A	Developing countries; large proportion; decreases
B		Developing countries; small proportion; increases
C		High-income countries; large proportion; increases
D		High-income countries; small proportion; increases

Question 6

The demand for loanable funds is determined by the willingness of ________ to borrow money to engage in new investment projects.

A		government
B		households
C		banks
D		firms

Question 7

The U.S. economy has been more stable since 1950.

True

False

Question 8

When the economy reaches a trough in a business cycle, which of the following will occur?

A		Income, production, and employment will continue to fall.
B		Income, production, and employment will begin to rise.
C		Income and production will rise, but employment will continue to fall.
D		Employment rises, but income and production will continue to fall.

Question 9

In a closed economy, what is the relationship between saving and investment?

A		Saving is greater than investment.
B		Investment is greater than saving.
C		Investment is equal to saving.
D		Investment may be greater or smaller than saving.

Question 10

The per-worker production function shows the relationship between ________ per hour worked and ________ per hour worked, holding ________ constant.

A		labor; real GDP; technology
B		capital; real GDP; technology
C		labor; capital; real GDP
D		capital; labor; real GDP

Question 11

New growth theory states that increases in ________ capital will result in ________ at the ________ level.

	A	knowledge; increasing returns to scale; firm
	B	physical; decreasing returns to scale; firm
	C	knowledge; decreasing returns to scale; economy
D		knowledge; increasing returns to scale; economy

Question 12

Which of the following is not a reason why the Industrial Revolution occurred when and where it did?

A		The British government was committed to upholding private property rights.
B		The British government was able to eliminate arbitrary increases in taxes.
C		The British government was able to more easily seize wealth.
D		Institutional changes by the British government helped protect wealth.

Question 13

Growth in real GDP per capita for the world economy was greatest during

A		the seventeenth century.
B		the eighteenth century.
C		the nineteenth century.
D		the twentieth century.

Question 14

Which of the following is a normative statement about economic growth?

A		Economic growth is associated with higher labor productivity growth.
B		Economic growth increases GDP per capita.
C		Economic growth hurts developing countries.
D		Foreign direct investment stimulates economic growth.

Question 15

The effect of a recession on a company like Whirlpool Corporation is such that

A		sales decline more sharply for Whirlpool as compared to firms that do not produce durable goods.
B		profits fall less sharply as compared to firms that do not produce durable goods.
C		the decline in sales is more short-lived as compared to firms that do not produce durable goods.
D		there is no difference in the impact of the recession on its profits as compared to firms that do not produce durable goods.

Question 16

For the recessions in the United States since the 1950s,

A		cyclical unemployment has been non-existent.
B		unemployment rises on average by about 1.2 percentage points 12 months after a recession begins.
C		unemployment falls on average by 2 percentage points 12 months after a recession begins.
D		unemployment rises on average about 5 percentage points 12 months after a recession begins.

Question 17

You are an economic advisor to the president. You are asked to recommend a policy to promote long-term economic growth in the economy. Which of the following policies would you choose?

A		a reduction in sales taxes
B		an investment tax credit
C		a reduction in taxes on luxury yachts
D		All of these

Question 18

In comparison to a government that runs a balanced budget, when the government runs a budget deficit,

	A	the equilibrium interest rate will fall.
	B	business investment will fall.
	C	household savings will fall.
	D	None of these

Question 19

If labor productivity growth slows down in a country, this means that the growth rate in ________ has declined.

A		labor force participation
B		the quantity of goods or services that can be produced by one hour of work
C		the working-age population
D		nominal GDP

Question 20

Policies to promote growth by increasing saving and investment work through

A		decreasing the supply of loanable funds, lowering the interest rate, raising the level of investment in physical capital.
B		increasing the supply of loanable funds, increasing the interest rate, raising the level of investment in physical capital.
C		increasing the supply of loanable funds, lowering the interest rate, lowering the level of investment in physical capital.
D		increasing the supply of loanable funds, lowering the interest rate, raising the level of investment in physical capital.

10.

The long-run aggregate supply curve (LRAS) is Y = Yf, which depends on the amounts of resources and the level of technology innovation. If a country has more resources and better technology, which of the following is true?

		A. The LRAS curve will shift to the right.
		B. The SRAS will shift to the right.
		C. The SRAS will shift to the left.
		D. Only A and B.
		E. Only A and C.

11.

Suppose the wage rates of workers are based on the expected price level. If there is an unexpected increase in AD, it will cause the actual price level to increase. Then workers should raise their expected price level and negotiate a higher wage rate. Then which of the following is most likely to be true when the expected price increases?

		A. The SRAS curve will shift rightward.
		B. The SRAS curve will shift leftward.
		C. The LRAS curve will shift leftward.
		D. Only A and C.
		E. Only B and C.

12.

Suppose the economy is in the long-run equilibrium, i.e., Y = Yf, and there is an unexpected decrease in AD. Assume that Yf is fixed, then which of the following is most likely to be true?

		A. The SRAS curve will shift to the right toward the new long-run equilibrium.
		B. The SRAS curve will shift to the left toward the new long-run equilibrium.
		C. In the new long-run equilibrium, price level will be higher.
		D. Only A and C.
		E. Only B and C.

13.

The short-run (SR) equilibrium is the intersection between AD and SRAS, and long-run (LR) equilibrium is the intersection between AD and LRAS. Every LR equilibrium is a SR equilibrium, but a SR equilibrium is not always the LR equilibrium. If an economy is operating at a SR equilibrium where Y > Yf, which of the following will occur in the process toward the new LR equilibrium when the economy corrects itself?

		A. Price increases.
		B. Real GDP decreases.
		C. Unemployment rate falls.
		D. Only A and B.
		E. Only B and C.

14.

From the Keynesians, Y = C + I + G + NX can be transformed into a theoretical model. In particular, assume that the consumption C = A + mpc (Y-T), where A is a constant, mpc is the marginal propensity to consume, Y is national income and T is income taxes. Suppose in the goods market equilibrium, aggregate expenditure = national income such that the two Y's will be the same from Y = A + mpc (Y-T) + I + G+ NX. . Suppose C = 400 + 0.75(Y â T). G = 100, I = 100, T = 100, and NX = 150, what is the Y in the goods market equilibrium? (All of the variables are in terms of million dollars)

$ million
Please enter a whole number, with no decimal point.

15.

Continue to assume that C = 400 + 0.75 (Y - 100), I = 100, and NX = 150. But the government now increases spending from 100 to 200, how much is the new Y in the goods market equilibrium?

$ million
Please enter a whole number, with no decimal point.

16.

Continue to assume that C = 400 + 0.75 (Y - 100). Then which of the following is true?

		A. The government spending multiplier = 4.
		B. The tax multiplier = 3.
		C. If the government increases spending by $50 million, and at the same time increases taxes by $50 milion to balance the budget, AD will shift to the right by $50 million.
		D. Only A and C.
		E. Only B and C.

17.

Suppose the federal government needs to balance the budget, which means that when the government spending increases, taxes must increase equally. In this case, government spending multiplier is called the balanced-budget multiplier, defined as the increase in real GDP/increase in government spending. By following the example from the previous question, how mcuh is the balanced-budget multiplier?

Please enter a whole number, with no decimal point.

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ECON 1BB3 Lecture Notes - Aggregate Supply, Aggregate Demand, Business Cycle

ECON 1BB3 Full Course Notes

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