ECON 101 Lecture Notes - Lecture 10: Economic Surplus, Price Discrimination, Market Power

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20 Jul 2018

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Second degree price discrimination: when monopolist knows there are different types of consumers, but cannot discriminate among consumers to know their type [to not know which category their consumer is in] Example: club pricing: the monopolist designs a pricing scheme (easy or complicated) to extract surplus from the consumer, usually the scheme follows, entry fee payment, price per unit. Scheme 1: (cid:1841) tariff: charge (cid:1868)=(cid:1839) (maximizes consumer surplus, charge an entry fee that is equal to the smallest consumer surplus (cs) across the consumers (graph) I(cid:374) this (cid:272)ase, it(cid:859)s the s(cid:373)all (cid:271)la(cid:272)k tria(cid:374)gle. Consumer 1 will end up with consumer surplus=0 after paying the entry fee: because since the entry fee is equal to the smallest surplus, at most, no one has a negative surplus. Mo(cid:374)opolist(cid:859)s (cid:448)aria(cid:271)le profit is gi(cid:448)e(cid:374) (cid:271)(cid:455) : because (cid:1868)=(cid:1839) Drawback: (cid:1841) tariff does (cid:374)ot (cid:373)a(cid:454)i(cid:373)ize the fir(cid:373)(cid:859)s profit. Choose among all the possible combinations of price/entry fee to maximize profits a.

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Question 1

The amount of profit that can be achieved using uniform pricing is __________ the profit that can be achieved from price discrimination because of _______.

Select one:

a. greater than; the cost of trying to determine every single consumer's individual demand (willingness to pay) is prohibitively expensive.

b. less than; uniform pricing is more costly so the ATC and AVC curves are higher than they are under price discrimination.

c. equal to; the TR and TC curves are equivalent under either pricing scheme, so there is no profit advantage to either scheme.

d. less than; total demand includes people who would be willing to pay more than, as well as less than, the uniform market price.

Question 2

A firm selling in two markets is practicing price discrimination:

Select one:

a. when it refuses to sell the good to some group of consumers.

b. anytime it charges different consumers different prices.

c. when it charges the same price to different consumers as long as they differ in their demand for the good.

d. when it is charging different consumers, different prices, and the price difference is not based upon cost differences.

Question 3

To successfully practice price discrimination:

Select one:

a. consumers in two separate markets must have identical demand.

b. the firm must possess market power.

c. it must be easy for consumers in one market to sell to consumers in the other market.

d. the firm must be a pure monopoly.

Question 4

If it could practice first-degree price discrimination, a firm with market power could earn:

Select one:

a. its typical monopoly profit as well as the area which, under uniform pricing, would represent the deadweight loss associated with market power.

b. an area half the size of its monopoly power under uniform pricing.

c. its typical monopoly profit as well as the area which, under uniform pricing, would represent consumer surplus.

d. its typical monopoly profit as well as the area which, under uniform pricing, would represent consumer surplus and the deadweight loss associated with market power.

erinant26

With two-part pricing

Select one:

A. consumers are required to buy two units of a good.

B. the consumer is limited in the number of units that can be purchased.

C. the average price paid varies with the number of units purchased.

D. the consumer puts down a deposit and then pays the rest when she picks up the goods purchased.

Which of the following sellers is most able to perfectly price discriminate?

Select one:

A. the post office

B. a clothing store

C. a grocery supermarket

D. a college or university

3.Consumers are better off with pricing in the following order: 1)________; 2)________; 3)________.

Select one:

A. competitive market; single-price monopoly; perfect price discrimination

B. single-price monopoly; competitive market; perfect price discrimination

C. competitive market; perfect price discrimination; single-price monopoly

D. Unable to determine.

4.Group price discrimination has ________ consumer surplus than under ________.

Select one:

A. more; an elastic demand curve

B. less; single-price monopoly

C. less; perfect competition

D. more; perfect competition

6. If a firm is to capture all consumer surplus with two-part pricing when customers are different

Select one:

A. it must be able to charge different access fees.

B. it must set unit price below marginal cost.

C. it must set unit price above marginal cost.

D. it cannot charge different prices for access fees.

7. All firms can increase profits using price discrimination.

Select one:

A. true, because firms can sell different versions of a product that is just right for an individual consumer

B. true, because market demand curves are downward sloping

C. false, because consumers aren't forced to buy a producer's products

D. false, because some firms are in competitive markets

For a perfect-price-discriminating monopoly, the marginal revenue curve

Select one:

A. varies for each consumer.

B. is the demand curve.

C. is the same as the monopolist's marginal revenue curve.

D. lies below the demand curve.

A good example of perfect price discrimination is

9. Select one:

A. buying a concert ticket on the street corner.

B. selling concert tickets to individuals on the street corner.

C. buying concert tickets at the ticket window.

D. selling concert tickets at the ticket window.

10. Suppose all individuals are identical, and their monthly demand for Internet access from a certain leading provider can be represented as p = 5 - (1/2)q where p is price in $ per hour and q is hours per month. The firm faces a constant marginal cost of $1. The profit-maximizing two-part tariff yields total revenue of

Select one:

A. $32.

B. $40.

C. $24.

D. $16.

amaranthmanatee1

1.
A monopolist faces the following demand curve:

Price Quantity Demanded

$51 1

$47 2

$42 3

$36 4

$29 5

$21 6

$12 7

The monopolist has total fixed costs of $60 and has a constantmarginal cost of $15. What is the profit-maximizing level ofproduction?

A) 5 units
B) 3 units
C) 2 units
D) 4 units
2.
A monopolist faces the following demand curve:

Price Quantity Demanded

$10 5

$9 10

$8 16

$7 23

$6 31

$5 49

$4 52

$3 60

The monopolist has total fixed costs of $40 and a constant marginalcost of $5. At the profit-maximizing level of output, themonopolistâs average total cost is

A) $6.74
B) $9.00
C) $7.50
D) $5.82
3.
A monopoly market

A) generally fails to maximize total economic well-being.
B) generally fails to maximize producer surplus.
C) always maximizes total economic well-being.
D) always minimizes consumer surplus.
4.
For a monopoly, the supply curve is a portion of its
A) none of the above; a monopoly does not have a supplycurve.
B) average total cost curve.
C) marginal revenue curve.
D) marginal cost curve.
5.
A monopoly firm can sell 200 units of output for $36.00 per unit.Alternatively, it can sell 201 units of output for $35.80 per unit.The marginal revenue of the 201st unit of output is
A) $â35.80.
B) $4.20.
C) $â4.20.
D) $35.80.
6.
If a monopolist sells 100 units at $8 per unit and realizes anaverage total cost of $6 per unit, what is the monopolist'sprofit?
A) $800
B) $400
C) $600
D) $200
7.
A monopolist is a price
A) setter, and therefore has no demand curve.
B) setter, and therefore has no supply curve.
C) taker, and therefore has no supply curve.
D) setter, and therefore has no variable cost curve.
8.
To define a monopoly, we cite the following characteristics: (i)The firm is the sole seller of its product. (ii) The firmâs productdoes not have close substitutes. (iii) The firm generates a largeeconomic profit. (iv) The firm is located in a small geographicmarket.
A) (ii) and (iv)
B) All of the above are correct.
C) (i) and (ii)
D) (i) and (iii)
9.
Consider a transportation corporation named C.R. Evans that hasjust completed the development of a new subway system in amedium-sized town in the Northwest. Currently, there are plenty ofseats on the subway, and it is never crowded. Its capacity farexceeds the needs of the city. After just a few years of operation,the shareholders of C.R. Evans experienced incredible rates ofreturn on their investment, due to the profitability of thecorporation.

Which of the following statements are most likely to be true? (i)New entrants to the market know they will earn a smaller piece ofthe market than C.R. Evans currently has. (ii) C.R. Evans is mostlikely experiencing increasing average total cost. (iii) C.R. Evansis a natural monopoly.

A) (ii) and (iii)
B) All of the above are correct.
C) (i) and (iii)
D) (i) and (ii)
10.

Quantity
Price
Total Revenue
Average Revenue
Marginal Revenue
1
$35
$35

2

64
32
29
3
$29

4

17
5
$23

11
6

120

7
$17

-1
8

-7
9

99
11
-13
10

80
8

If the monopolist sells 8 units of its product, how much totalrevenue will it receive from the sale?

You wil have to complete the entries in this table to get ananswer. It is a wothwhile exercise and I encourage you to completethe table.

HINT: (a.) Total Revenue = Price x Quantity. (So for quantity of 3x price of $29 = 87 total revenue)

(b) Average Revenue is the same as Price. (So column 2 and column 4would be the same. Calculate to see if that is correct)

(c) Marginal Revenue = Change in TR divided by change in quantity.(You calculated TR = 87 for Q=3. Thus to find MR for Q = 3, findthe change in TR= 87 - 64 and divided by one).

A) 112
B) It cannot be determined from the information provided.
C) 164
D) 40
11.
What conditions need to be present for a firm to be able to use'price discrimination?'
A) Firm should not be perfectly competitive; the market can beseparated according to different elasticities; items can beresold
B) Firm should be perfectly competitive; the market can beseparated according to different elasticities; resale of the itemsis not possible.
C) Firm should not be perfectly competitive; buyers should havesame elasticities;; resale of the items is not possible.
D) Firm should not be perfectly competitive; the market can beseparated according to different elasticities; resale of the itemsis not possible.
12.
If the government regulates the natural monopoly by asking it tocharge a price that is equal to its marginal cost (P=MC) theregulated monopoly will -------- so instead the government ends upletting it charge a price equal to its ------
A) have a profit; fixed cost
B) have a profit; average cost
C) have a loss; variable cost
D) have a loss; average cost

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ECON 101 Lecture Notes - Lecture 10: Economic Surplus, Price Discrimination, Market Power

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