EC140 Lecture Notes - Lecture 9: Aggregate Demand, Demand Curve, Price Level

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20 Apr 2016

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The money that people hold can buy fewer goods. People are effectively poorer - consumption falls. Similarly: a fall in prices: value of money held goes up, consumption therefore rises. Looks like demand curve from ec120 (downward sloping) Ad curve shows level of real gdp for each price level where desired aggregate expenditure equals actual gdp. Changes in the price level cause: equilibrium output from the simple macro model for each price level, shifts of the ae curve, movements along the ad curve. As prices rise: people are poorer, consumption falls, foreign goods are relatively cheaper, imports rise, exports fall, as income falls aggregate demand goes up, move up and left along the ad curve. All three changes mean that as prices rise, real gdp falls, ar shifts down, equilibrium. Anything that shifts the ae curve, will shift the ad curve as well.

Related Questions

1. Which of the following is likely to happen if the Fed buys Treasury securities from banks?

interest rate rises; investment falls

interest rate rises; investment rises

interest rate falls; investment rises

interest rate falls; investment falls

2. The main goal of monetary policy is to shift

3. Which of the following is true regarding the effects of an expansionary monetary policy?

Printing more money will affect real GDP only in the short run because all prices do not adjust fully in the short run.

Printing more money will affect real GDP both in the short and long run because inflation is a natural occurrence of expansionary monetary policy.

Printing more money will not lower the value of money in the short run because prices are fully flexible in the short run.

Printing more money will ultimately raise the value of money in the long run because prices are fully flexible in the long run.

4. In which of the following cases are you likely to be adversely affected by unexpected inflation?

You, the owner of a local restaurant, charge the price of lamb lasagna as per the daily market rate of lamb.

You purchase Mountain Dew every day from the dormitory vending machine, which keeps its prices fixed for the entire school year.

You, the owner of an airline company, sign a two-year contract for airline fuel.

You deposit $10,000 in a bank account for 5 years for a fixed interest rate of 1%.

5. The Phillips curve depicts the relation between

real GDP and price level.

price level and inflation rate.

unemployment rate and inflation rate.

unemployment rate and real GDP.

6. Which of the following statements is true regarding the shapes of short-run and long-run Phillips curves?

The short-run Phillips curve is vertical and the long-run Phillips curve is downward sloping.

The short-run Phillips curve is downward sloping and the long-run Phillips curve is vertical.

Both the short-run and long-run Phillips curves are downward sloping.

Both the short-run and long-run Phillips curves are vertical.

7. Suppose the table below lists the actual annual inflation rates for 2010 to 2015. What would be the most likely predictions people make about the inflation rate for 2016 based on adaptive and rational expectations theories, respectively?

Year	Actual Inflation rate
2010	0%
2011	0%
2012	3%
2013	3%
2014	6%
2015	6%

8. Which of the following can change relatively quickly in the short-run?

the price of a latte in a coffee shop

the salary of a finance professor

the rent paid for a store

copperherring529

1. Which of the following shifts aggregate demand to the right?
a. Congress reduces purchases of new weapons systems.
b. US exports increase.
c. The price level falls
d. New developments in IT increase the productivity of most manufacturing industries in the US.

2. Suppose the EPA introduces new smog regulation that makes it costlier to produce cars. As a result, aggregate supply falls (primary effect) and firms cut back on production. With less output in the economy available for consumers, consumers bid up the prices of available output. With higher prices, firms choose to produce more (secondary effect).
Which of the following best explains what the net effect on GDP?
a. The two effects should essentially cancel out, with little to no effect on GDP, but the price level clearly rises.
b. It is impossible to say what happens to GDP without being able to compare the magnitudes of the two effects.
c. Real GDP rises as the secondary effect dominates the primary effect.
d. Real GDP falls since the primary effect dominates the secondary effect.

3. A Keynesian economist who observes an output gap would conclude that
a. aggregate demand should be shifted to the right.
b. a policy of deregulation would be better than demand management policy
c. aggregate supply should be shifted to the right
d. All proposed answer options are correct

4. Monetarists believe
a. the Aggregate Supply curve is upward-sloping (but not vertical) over all time frames.
b. the Aggregate Supply curve can be treated as horizontal in the long run (over 10 years
c. the Aggregate Supply curve is vertical only in the very long run (over 20 years).
d. the Aggregate Supply curve can be treated as vertical in the short-to-medium run (1-2 years)

5. Suppose the price of oil increases due to conflict in the Middle East. How will this be illustrated in the AD-AS model?
a. The aggregate demand curve will shift to the left
b. The aggregate supply curve will shift to the left.
c. The aggregate demand curve will shift to the right
d. The aggregate supply curve will shift to the right

6. Assume a Keynesian AS curve. In the short run, when there is a large output gap
a. contractionary demand management policy is likely to be highly inflationary
b. expansionary demand management policy does not cause much inflation.
c. expansionary demand management policy is likely to be highly inflationary
d. the government should use contractionary demand management policy

7. As a result of Bush tax cuts that partially expired in January 2013, the marginal tax rates for some households increased and these households paid higher taxes. Which of the following would be the best description of the tax cut expiration?
a. Rightward shift in AS
b. Rightward shift in AD
c. Leftward shift in AD
d. Leftward shift in AS

8. Suppose that the U.S. government increases income taxes on individuals earning more than $500,000/year and uses the revenue from this tax increase to subsidize the cost of energy for businesses. How will this policy change affect the U.S. economy?
a. The effect on output is ambiguous but price level will decrease for sure
b. The effect on both output and price level is ambiguous.
c. The effect on price level is ambiguous but output will increase for sure
d. The effect on price level is ambiguous but output will decrease for sure

9. If Australia, which imports goods from the United States, went into recession, we would expect that U.S. net exports would
a. rise, making aggregate demand shift right.
b. rise, making aggregate demand shift left
c. fall, making aggregate demand shift left
d. fall, making aggregate demand shift right

10. Suppose that Greece decides to exit the European Union and the Euro Zone, causing a boost in business confidence in European markets. How would you illustrate the primary effect of Greeceâs decision in the AD-AS model for the EU economy?

Note: for this question, assume that Y in the AD-AS model represents output (GDP) of EU member countries without Greece.
a. a shift in the aggregate supply curve to the left and a shift in the aggregate demand curve to the left
b. a shift in the aggregate demand curve to the right
c. a shift in the aggregate demand curve to the left
d. movement along the aggregate demand curve to the left

11. The Austrian school of thought believes that demand management policy should not be used because
a. big government prefers deregulation, which shifts aggregate supply
b. the economy is always at full employment
c. shifting AD to the right is likely to cause deflation
d. big government has a bias towards inflationary policy

rosedolphin326

The demand for money
A) d and e are correct
B) all of the following are correct
C) decreases as the average selling price of a unit of outputincreases
D) increases as GDP increases
E) is increased by credit card usage
2. The higher the interest rate, the more of their wealth peoplewill hold as money.
A) True
B) False
3. The money demand curve slopes
A) downward because the cost of holding money decreases as theinterest rate decreases
B) downward because the cost of holding money increases as theinterest rate decreases
C) upward because people demand more money as GDP increases
D) upward because people demand more money as GDP decreases
E) downward because people demand more money as the price levelincreases
4. Which of the following, other things constant, will shift themoney demand curve to the left?
A) an increase in the interest rate
B) a decrease in the interest rate
C) a decrease in real GDP
D) an increase in real GDP
E) an increase in the price level
5. An increase in the money supply will
A) increase the demand for money at each interest rate
B) decrease the demand for money at each interest rate
C) lead people to try to exchange money for interest-bearingassets
D) lead people to try to exchange interest-bearing assets formoney
E) increase the interest rate
6. When an increase in the money supply reduces the interest rate,investment and nominal GDP increase.
A) True
B) False
7. In the short run, a decrease in the money supply will cause adecrease in Gross Domestic Product and a decrease in the pricelevel.
A) True
B) False
8. The demand curve for investment is graphed with __________ onthe vertical axis and __________ on the horizontal axis.
A) the interest rate; investment
B) investment; the interest rate
C) the price level; investment
D) investment; the price level
E) real GDP; investment
9. As the interest rate increases,
A) the demand for investment curve shifts to the right
B) the demand for investment curve shifts to the left
C) there is a movement downward along the demand for investmentcurve
D) there is a movement upward along the demand for investmentcurve
E) GDP increases
10. If the economy experiences a contractionary gap and the Fedstimulates the economy, then:
A) The money supply is increasing because the Fed prints moremoney
B) The money supply is decreasing because the Fed hoardsmoney
C) The money supply is increasing because the Fed makes open-marketpurchases
D) The money supply is decreasing because the Fed makes open-marketsales
E) There is no change in the money supply because the Fed cannotinfluence the money supply
11. If the Fed decreases the money supply, GDP
A) increases because the resulting increase in the interest rateleads to a decrease in investment
B) increases because the resulting decrease in the interest rateleads to an increase in investment
C) decreases because the resulting increase in the interest rateleads to a decrease in investment
D) decreases because the resulting increase in the interest rateleads to an increase in investment
E) decreases because the resulting decrease in the interest rateleads to an increase in investment
12. An increase in the money supply can increase the price level,real GDP, or both, but it is impossible to tell exactly what willhappen without knowing the slope of the aggregate supplycurve.
A) True
B) False
13. If the economy experiences an expansionary gap and the Fedsells US government securities in the open-market, then:
A) Money supply increases, investment increases, aggregate demandincreases
B) Money supply increases, the interest rate increases, and theaggregate demand increases
C) Money supply decreases, the interest rate decreases, and theaggregate demand falls
D) Money supply decreases, the investment decreases, and theaggregate demand decreases
E) Interest rate falls, investment falls, aggregate demandincreases
14. If the money supply equals $1,000 and nominal GDP equals$3,000, then V
A) equals 1/3
B) equals 3
C) equals 3 million
D) cannot be determined since we do not know anything aboutprices
E) cannot be determined since we do not know anything about realGDP
15. If the money supply is increasing at a constant 8 percent,velocity is constant, real GDP is increasing at 5 percent, and theinflation rate is 3 percent, which of the following is true?
A) The growth rate of GDP is too low to be maintained.
B) The inflation rate is too low to be maintained.
C) Velocity is too low to be maintained.
D) The money supply growth rate is too low to be maintained.
E) This situation can continue indefinitely.
16. If real output and velocity are stable and predictable, thenthe equation of exchange can be used to derive a simplerelationship between
A) the money supply and the price level
B) the money supply and the interest rate
C) the money supply and the foreign exchange rate
D) velocity and real GDP
E) velocity and nominal GDP
17. For the quantity theory of money to yield usefulpredictions,
A) fiscal policy must be ineffective in altering aggregatedemand
B) fiscal policy must be effective in altering aggregatedemand
C) the economy must be operating at the potential level of realGross Domestic Product
D) velocity must be stable or predictable
E) velocity must be unstable
18. A rising rate of inflation
A) makes people more willing to hold money as an asset
B) reduces the usefulness of money as a store of value and thusincreases the velocity of money
C) increases the usefulness of money as a medium of exchange andthus reduces the velocity of money
D) is usually preceded by a reduction in the money supply
E) does not, apparently, have any effect on the velocity ofmoney
19. There is considerable disagreement about whether the Fedshould
A) engage in open market operations
B) have the power to set reserve requirements
C) reduce the money supply when the economy is growing
D) allow banks to invest in the stock market
E) attempt to control interest rates or should instead attempt tocontrol the money supply
20. For interest rates to remain stable during economic expansions,the growth rate of the money supply should
A) exceed the growth in the demand for money
B) just match the growth in the demand for money
C) be less than the growth in the demand for money
D) be zero
E) just match the growth in nominal GDP

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EC140 Lecture Notes - Lecture 9: Aggregate Demand, Demand Curve, Price Level

EC140 Full Course Notes

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