EC120 Chapter Notes - Chapter 8: Economic Surplus, Demand Curve, Deadweight Loss

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26 Oct 2016

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When tax is levied on buyers, demand curve shifts downward by the size of the tax. When tax levied on sellers, supply curve shifts upward by that amount. Either case, when tax is enacted, price paid by buyers rises & price received by sellers fallers. Tax places wedge b/w price buyers pay and price receivers sell: qs falls below level that would be sold w/o tax, tax on good causes size of the market for the good to shrink. The height of rectangle is size of tax, t. Width of rectangle is the qs of the good, q. Welfare without a tax: consider welfare before the gov. has imposed a tax. Without tax, price and quantity found at intersection of supply and demand curve. Demand curve reflects buyers willingness to pay. Price = p1: consumer surplus -> area b/w demand curve and the price, a + b + c.

Related Questions

_____ 1. Suppose you make silver jewelry. If the price of silver falls, we would expect you to:

a. be willing and able to produce less jewelry than before at each possible price.

b. be willing and able to produce more jewelry than before at each possible price.

c. face greater demand for your jewelry.

d. face a weaker demand for your jewelry.

_____ 2. If suppliers expect the price of their product to fall in the future, then they will:

a. increase supply (supply curve shifts out) now.

b. decrease supply (supply curve shifts in) now.

c. increase supply in the future, but not now.

d. decrease supply in the future, but not now.

_____ 3. Consider the market for portable air conditioners, initially in equilibrium. When a heatwave strikes, the equilibrium price:

a. increases and equilibrium quantity decreases.

b. decreases, and the equilibrium quantity increases.

c. and quantity both increase.

d. and quantity both decrease.

_____ 4. Buyers can buy all they want to buy and sellers can sell all they want to sell at:

a. prices at and above the equilibrium price.

b. prices at and below the equilibrium price.

c. prices above and below the equilibrium price, but not at the equilibrium price.

d. the equilibrium price, but not at prices above or below the equilibrium price.

_____ 5. The law of supply and demand states that:

a. demand and supply curves shift out as time goes by.

b. the price of a goodwill rise in response to excess demand for that good.

c. when the supply curve for good shifts, the demand curve for that good shifts in response.

d. the equilibrium price of goodwill be rising more often than it will be falling.

_____ 6. If Doritos and Cheetos are substitutes, a rise in the price of Cheetos will cause:

a. the equilibrium quantity of Doritos to fall and the price of Doritos to rise.

b. the equilibrium quantity and price of Doritos to rise.

c. the equilibrium quantity and price of Doritos to fall.

d. the equilibrium quantity of Doritos to rise and the price of Doritos to fall.

_____ 7. New production technology is perfected that allows auto manufacturers to build an automobile using half the labor hours formerly needed. As a result:

a. the equilibrium quantity of automobiles increases and the price decreases.

b. the equilibrium quantity and price of automobiles increase.

c. the equilibrium quantity and price of automobiles decreases.

d. there is likely no change in the number of automobiles produced.

_____ 8. The U.S. government announces that it will raise the interest rate on college student loans beginning in January of next year. The immediate market impact is:

a. the demand curve for student loans shifts out.

b. the supply curve for student loans shifts out.

c. we anticipate that more student loans will be completed next year than this year.

d. all of the above are correct.

_____ 9. What curve shift produces a fall in price and increase in quantity exchanged?

a. An inward shift in the demand curve.

b. An inward shift in the supply curve.

c. An outward shift in the supply curve.

d. An outward shift in the demand curve.

_____ 10. We note that fewer motorcycles were sold this year than last and that the price is also lower. What event could have caused this outcome?

a. A technological change that improved the fuel efficiency of motorcycles.

b. A rise in the wages paid to motorcycle manufacturing workers.

c. A motorcycle craze due to the popularity of Sons of Anarchy.

d. Increasing concerns about health impacts from breathing motorcycle exhaust.

_____ 11. The price that results in quantity supplied equaling quantity demanded is the optimal (best) price because it:

a. maximizes the combined welfare of buyers and sellers.

b. maximizes the cost of the seller.

c. minimizes the expenditure of buyers.

d. all of the above are correct.

_____ 12. Consumer surplus is the:

a. quantity of good consumers get without paying anything.

b. amount a consumer pays minus the amount the consumer is willing to pay.

c. amount a consumer is willing to pay minus the amount the consumer pays.

d. value of a good to a consumer.

_____ 13. In a market, the marginal buyer is the one:

a. whose willingness to pay is higher than all other buyers and potential buyers.

b. whose willingness to pay is lower than all other buyers and potential buyers.

c. who is willing to buy exactly one unit of the good.

d. who would be the first to leave the market if the price were any higher.

_____ 14. If a consumer is willing and able to pay $20 for a particular good and if she actually pays $16 for the good, then her consumer surplus is:

a. $4.

b. $16.

c. $20.

d. $36.

_____ 15. Suppose there is an early freeze in California that reduces the size of the orange crop. What happens to consumer surplus in the market for oranges?

a. Consumer surplus increases.

b. Consumer surplus decreases.

c. Consumer surplus is not affected by this change.

d. We would have to know whether the demand for oranges is elastic or inelastic.

_____ 16. Producer surplus is the area on a supply/demand graph:

a. under the supply curve.

b. between the supply and demand curves.

c. below the price line and above the supply curve.

d. under the demand curve and above the price line.

_____ 17. Economists typically measure economic efficiency using:

a. total producer and consumer surplus.

b. profits to firms.

c. the quantity supplied by sellers.

d. the price paid by buyers.

_____ 18. Which of the following statements is correct?

a. Efficiency and equality are both maximized when total surplus is maximized.

b. Efficiency deals with the size of the economic pie; equality with how fairly the pie is sliced.

c. Efficiency is more difficult to evaluate than equality.

d. Equality is judged on positive grounds; efficiency requires normative judgments.

_____ 19. The price elasticity of demand measures how much:

a. quantity demanded a response to changes in price.

b. quantity demanded a response to changes in income.

c. price responds to a change in demand.

d. Both a and c are correct

_____ 20. Goods with many close substitutes tend to have:

a. less elastic demands.

b. more elastic demands.

c. price elasticities of demand that are unit elastic.

d. income elasticities that are negative.

Short Answer Questions:

All of the following questions are based on the data shown here for coffee demand and supply at a fictional Columbus coffee shop called Go-bucks.

Price Quantity Quantity

per Cup Demanded Supplied

$1.60 1,700 1,220

$1.80 1,555 1,300

$2.00 1,400 1,400

$2.20 1,235 1,520

$2.40 1,060 1,660

$2.60 875 1,820

_____ 21. (6 points) Using the mid-point formula, calculate the price elasticity of demand as the price increases from $1.60 to $1.80.

_____ 22. (6 points) Repeat the calculation of the price elasticity of demand, this time for a price increase from $1.80 to $2.00.

_____ 23. (6 points) Repeat the calculation of the price elasticity of demand, this time for a price increase from $2.40 to $2.60.

24. (4 points) Over which price range is demand inelastic? Over which price range is demand elastic? Does this follow the trend noted in class?

_____________________________________________________________________________

_____ 25. (6 points) Turning to the supply side, calculate the price elasticity of supply as the price increases from $2.20 to $2.40.

26. (2 points) How would you describe the price elasticity of supply over this range?

_____________________________________________________________________________

graychimpanzee865

1.
John just bought shares of stock in IBM for $10,000 and paid a $90commission to his broker. How did this affect GDP?
A) It had no impact on GDP.
B) GDP increased by $90.
C) GDP increased by $10,000.
D) GDP increased by $9,990.
E) GDP increased by $10,090.
2.
Opportunity cost is the ____ alternative forfeited when a choice ismade.
A) least-valued
B) most highly-valued
C) most convenient
D) most recently considered
3.
If there is an increase in the amount of good B foregone as everyadditional unit of good A is produced, the PPF between A and Bwould
A) be a straight line.
B) be a bowed-outward curve.
C) be a bowed-inward curve.
D) not exist.
4.
Persons who are retired or engaged in own-home housework areconsidered to be in which of the following categories?
A) in the civilian labor force
B) not in the labor force
C) employed
D) unemployed
5.
A recessionary gap exists if (actual) Real GDP is ____ Natural RealGDP.
A) less than
B) greater than
C) equal to
D) b and c
E) none of the above
6.
Decision making "at the margin" means making a choice based on ____of a decision.
A) the total benefits
B) the total costs
C) comparing the total benefits and costs
D) comparing the additional benefits and costs
7.
When Claudia trades $100 for good X, economists assume that sheis
A) trading something of less value to her for something of morevalue to her.
B) trading something of more value to her for something of lessvalue to her.
C) trading something that gives her less utility for something thatgives her more utility.
D) a and c
E) none of the above
8.
An increase in investment at a given price level
A) shifts the AD curve to the right.
B) shifts the AD curve to the left.
C) causes an upward movement along the existing AD curve.
D) causes a downward movement along the existing AD curve.
E) none of the above
9.
If the demand for a good falls by less than the supply of the goodrises, then equilibrium price will ____ and equilibrium quantitywill ____.
A) rise; fall
B) rise; rise
C) fall; fall
D) fall; rise
10.
The CPI was 140 in one year and 144 the following year.Approximately how much did prices rise between the two years?
A) 2.86 percent
B) 2.78 percent
C) 0.03 percent
D) 1.03 percent
E) none of the above
11.
The expenditure approach to measuring GDP sums
A) consumption, investment, government purchases, and netexports.
B) sales, revenues, income, and wages.
C) profits, compensation of employees, consumption, andinvestment.
D) net exports, consumption, wages, and salaries.
12.
Which of the following would not be included in the calculation ofthis year's GDP?
A) a headlight bulb purchased at Joe's Auto Supply by Susan toreplace a burnt out bulb in her car
B) a headlight bulb purchased by Ford Motor Co. from asupplier
C) a headlight bulb produced but not sold this year and thus endingup as inventory
D) none of the above, i.e., all would be included
13.
Suppose the government decides that every family should own its ownhome. To bring this about, the government decides to subsidize thehome-construction industry by giving the home-constructioncompanies $10,000 for every house that they build. As a result ofthis,
A) the supply curve of new houses would shift leftward, since itnow costs $10,000 more for builders to produce a house.
B) the demand curve for new houses would shift rightward, since nowevery family would want to buy a house.
C) the demand curve for new houses would shift leftward.
D) the supply curve of new houses would shift rightward, sincebuilders would be willing to produce and sell more houses at eachgiven price.
E) c and d
14.
Which set of changes will raise demand?
A) an increase in income (assuming demand is for a normal good), adecline in wage rates, and a rise in the per-unit tax placed on theproduction of a good
B) an increase in the number of buyers, a decline in the price of asubstitute, and an increase in the prices of relevantresources
C) an increase in the price of a substitute, a decrease in theprice of a complement, and an increase in expected (future)price
D) a decline in the number of buyers, an increase in the price of acomplement, and a decline in a per-unit tax placed on theproduction of a good
E) none of the above
15.
Both country 1 and country 2 are located on their respectiveproduction possibilities frontiers (PPFs), but country 1 producestwice the output that country 2 produces. It follows that
A) country 1's PPF lies further to the right than country 2'sPPF.
B) country 1 has a smaller population than country 2.
C) country 1 has a bigger population than country 2.
D) country 1 is efficient and country 2 is inefficient.
E) none of the above
16.
Suppose aggregate demand is too low to bring about the Natural RealGDP level. A Keynesian policy prescription would call for a(n) ____to close this recessionary gap.
A) increase in government spending
B) decrease in government spending
C) increase in taxes
D) decrease in taxes
E) a or d
17.
The structural unemployment rate is 3.1 percent, the frictionalunemployment rate is 2.1 percent, and the current unemployment rateis 4.9 percent. The economy is in
A) a recessionary gap producing less than Natural Real GDP.
B) an inflationary gap producing more than Natural Real GDP.
C) long-run equilibrium.
D) an inflationary gap producing Natural Real GDP.
E) a recessionary gap producing more than Natural Real GDP.
18.
A fall in the price level changes the purchasing power of money.This is relevant to the ____ effect.
A) international trade
B) real balance
C) aggregate demand
D) interest rate
E) aggregate supply
19.
An economic policy initiative results in the AD curve shifting tothe right. As a result,
A) the price level will rise.
B) the price level will stay constant.
C) the price level will fall.
D) Real GDP will rise in the short run.
E) a and d
20.
Which of the following is consistent with the classical position onwages and prices?
A) Wages and prices are sticky in the downward direction.
B) Wages are sticky in the downward direction, but prices areflexible.
C) Wages and prices are flexible.
D) Prices are sticky in the downward direction, but wages areflexible.
21.
If the bottom half of all U.S. income tax payers were allowed tostop paying the income tax entirely and the top 50% continued topay as they do now, tax revenues to the government would drop byabout
A) 3.6 percent.
B) 10.2 percent.
C) 13.9 percent.
D) 33.3 percent.
22.
Which of the following is most nearly consistent with Say'slaw?
A) When a person produces one good, he or she plans to demand othergoods.
B) When a person produces a good, he or she plans to sell it.
C) When a person buys a good, he or she plans to pay for it withmoney.
D) When a person goes to work, he or she plans to produce.
23.
The economy was at point A producing 100X and 200Y. It moved topoint B where it produces 200X and 300Y. It follows that
A) point A may have been a point below the economy's PPF, whilepoint B may lie on the PPF.
B) the economy's PPF could have shifted outward and point A was apoint on the economy's old PPF.
C) the economy has moved from one point on its PPF to another pointon the same PPF.
D) a or b
E) a or c
24.
The condition in an economy that makes a "rationing device" anecessity is the fact that
A) the economy is organized around free markets.
B) the economy is centrally planned by the government.
C) scarcity exists.
D) there are fewer types of goods than there are people in theeconomy.
25.
Expansionary fiscal policy actions include ____ government spendingand/or ____ taxes, while contractionary fiscal policy actionsinclude ____ government spending and/or ____ taxes.
A) increasing; increasing; decreasing; decreasing
B) decreasing; decreasing; increasing; increasing
C) increasing; decreasing; increasing; decreasing
D) decreasing; increasing; increasing; decreasing
E) increasing; decreasing; decreasing; increasing
26.
A price ceiling is a government-mandated
A) minimum price below which legal trades cannot be made.
B) maximum price above which legal trades cannot be made.
C) minimum price above which legal trades cannot be made.
D) maximum price below which legal trades cannot be made.
27.
In year 1 the CPI is 144.1, and in year 2 the CPI is 151. IfSarah's salary was $33,500 in year 1, what salary in year 2 wouldcause her to exactly "keep up with inflation"?
A) $50,585
B) $48,274
C) $40,508
D) $35,104
28.
One measure of the inflation rate is the
A) sum of the CPIs of adjacent years.
B) percentage change in the CPI of adjacent years.
C) percentage change in the Real GDP of adjacent years.
D) GDP minus the Real GDP in a year.
29.
Expansionary fiscal policy is ineffective if
A) there are idle resources in the economy.
B) the MPC is less than 0.60.
C) the government has a budget surplus.
D) there is complete crowding out.
E) a and d
30.
Suppose the economy goes from a point on its unchanging PPF to apoint down and to the left of it. This could be due to
A) a gain of resources.
B) a loss of resources.
C) technological improvement in the production of both goods.
D) a new law that interferes with economic efficiency.
31.
A decrease in the price of electricity will cause
A) a movement down the SRAS curve.
B) a movement up the SRAS curve.
C) a leftward shift in the SRAS curve.
D) a rightward shift in the SRAS curve.
E) no change regarding the SRAS curve
32.
Which of the following is an example of crowding out?
A) A decrease in the rate of growth of the stock of money decreasesGDP.
B) A deficit causes an increase in interest rates, which causes adecrease in investment spending.
C) An increase in tariffs causes a decrease in imports.
D) A decrease in government housing subsidies causes an increase inprivate spending on housing.
33.
A rightward shift in the demand curve for tennis balls could becaused by
A) a fall in the price of tennis balls.
B) a fall in the price of tennis rackets.
C) a rise in the price of tennis lessons.
D) a fall in income, assuming tennis balls are a normal good.
34.
Here is a consumption function: C = C0 + MPC(Yd). If MPC is 0.80,then we know that
A) as Yd rises by $1, Co rises by $0.80.
B) as Yd rises by $1, C rises by $0.80.
C) Yd rises by $0.80.
D) as C0 rises by $0.80, Yd rises by $1.
35.
Suppose a drop in stock prices makes people feel less wealthy. Thiswould cause ____ the economy's AD curve.
A) movement down along
B) movement up along
C) a rightward shift of
D) a leftward shift of
36.
An economy is producing its Natural Real GDP when the rate ofunemployment is equal to the ____ unemployment rate.
A) frictional
B) structural
C) sum of the frictional unemployment rate and the structural
D) seasonal
E) cyclical
37.
Who would be most likely to agree that "People do not always savemore as interest rates rise"?
A) a classical economist
B) John Maynard Keynes
C) an efficiency wage theorist
D) a and b
E) a, b, and c
38.
The U.S. income tax is currently a ____ tax.
A) progressive
B) proportional
C) regressive
D) proactive
39.
The question of U.S. budget deficits and their impact on the U.S.economy is dealt with in the study of
A) microeconomics.
B) managerial economics.
C) macroeconomics.
D) consumer economics.
40.
John Maynard Keynes believed that wages may be inflexible in thedownward direction. Consequently, an economy
A) could get stuck in long-run equilibrium.
B) could get stuck in a recessionary gap.
C) could get stuck in an inflationary gap.
D) would always produce more than Natural Real GDP.
E) b and c

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EC120 Chapter Notes - Chapter 8: Economic Surplus, Demand Curve, Deadweight Loss

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