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ECC1000 Study Guide - Quiz Guide: Ceteris Paribus, Monopolistic Competition, Demand Curve

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School
Monash University
Department
Economics - ECC
Course
ECC1000
Professor
James Bugden

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ECC1000 Exam Notes
Main topics
• Competitive markets and applications
o Demand and supply model
o Elasticities and applications
o Efficiency and government policies (price control, tax)
o International trade – why, how and what protectionism does
• Market failure – externalities, public goods and common resources
• Behaviour of firms
o Costs of production
o Behaviour of firms in competitive markets
o Monopoly and monopolistic competition
o Oligopoly and game theory
Competitive markets and applications
Demand and supply model
Price vs other variables
• Determinants of demand
• Determinants of supply
• Changes in market equilibrium – Primary interest is how price and quantity change.
Demand curve – a group of the relationship between price and quantity demanded
• Law of demand – Slopes downwards because lower prices means a greater quantity demanded
• Quantity demanded – amount of a good that buyers are willing and able to purchase
• Demand schedule – a table that shows the relationship between the price of a good and the quantity demanded
Change in price of good = movement along demand/supply curve
Change in other factors = shift of demand/supply curve
Ceteris paribus – ‘other things being equal’, all variables other than the ones being studied are assumed to be constant
If unsure: Draw diagrams - Be clear when labelling the axes - Know what is a relevant good (grapes or wine?)
Normal good – good for which an increase in income leads to an increase in quantity demanded
Inferior good – a good for which an increase in income leads to a decrease in quantity demanded
Substitutes - Two goods for which a decrease in the price of one good leads to a decrease in the demand for the other good
Complements – two goods for which a decrease in the price of one good leads to an increase in the demand for the other
good
Variables that affect quantity demanded
A change in this variable
Price
Represents a movement along the demand curve
Income
Shifts the demand curve
Prices of related goods
Shifts the demand curve
Tastes
Shifts the demand curve
Expectations
Shifts the demand curve
Number of buyers
Shifts the demand curve
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Document Summary

Competitive markets and applications: demand and supply model. International trade why, how and what protectionism does: market failure externalities, public goods and common resources. Behaviour of firms in competitive markets: monopoly and monopolistic competition, oligopoly and game theory. Changes in market equilibrium primary interest is how price and quantity change. Demand curve a group of the relationship between price and quantity demanded. Change in price of good = movement along demand/supply curve. Change in other factors = shift of demand/supply curve. Ceteris paribus other things being equal", all variables other than the ones being studied are assumed to be constant. If unsure: draw diagrams - be clear when labelling the axes - know what is a relevant good (grapes or wine?) Normal good good for which an increase in income leads to an increase in quantity demanded. Inferior good a good for which an increase in income leads to a decrease in quantity demanded.

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Related Questions

Can I get answers about these questions??

These questions are about Chapter 16-22 in Principles of Microecnomics sixth editon.


Monopolistic competition

· What makes a market monopolistically competitive?

· How do monopolistically competitive firms decide how much to produce and what price to set?

· How to monopolistically competitive firms make short-run and long-run choices?

· What is the role of advertising?

Oligopoly and Game Theory

· What is the prisoner’s dilemma and what are some applications?

· What is collusion and why is it difficult? What are some things that can make it harder or easier to collude?

· What is a dominant strategy?

· How can you find a Nash equilibrium in a game where a player has a dominant strategy?

Markets for Factors of Production

· How do profit maximizing firms decide how much of a factor of production (such as labor) to use? In other words what is the demand for factors of production?

· What changes the demand for factors of production?

· What determines the supply for labor? Supply for other factors of production?

· How are the rental prices and wages determined in a competitive market for factors of production?

Earnings and Discrimination

· What are some reasons why different people have different labor earnings?

· What are some difficulties in measuring discrimination?

· Why might firms that discriminate have difficulty competing?

· Why might a firm find it profitable to discriminate?

Income Inequality and Poverty

· What are some political philosophies regarding what the government should do to decrease poverty or income inequality?

· What are some policies that can reduce poverty? What are the strengths and weaknesses of these policies?

Consumer Choice

· What is the consumers budget constraint?

· How does a consumer choose how much of different goods to consume?

· What are the income and substitution effects?

· How does the demand curve relate to the consumer choice problem?

· How does the consumer choice problem relate to labor supply and borrowing/lending behavior?

Asymmetric Information and Healthcare

· What is moral hazard?

· What is adverse selection?

· How do these two concepts relate to the market for insurance and healthcare?

· How do insurance companies try to deal with adverse selection and moral hazard?

1).

A consumer spends more time searching for a good when her reservation price is:

increased.

reduced.

fixed.

None of the statements is correct.

2).

In the game shown below, firms 1 and 2 must independently decide whether to charge high or low prices.



Which of the following are Nash equilibrium payoffs in the one-shot game?

(0, 0)

(5, -5)

(-5, 5)

(10, 10)

3).

A risk-neutral individual would:

prefer $5 with certainty to a risky prospect with the expected value of $5.

prefer a risky prospect with an expected value of $5 to a certain amount of $5.

be indifferent between a risky prospect with an expect value of $5 to a certain amount of $5.

prefer a risky prospect with the expected value of $0.50 to $5 with certainty.

4).

Snowpeak Ski Resort offers a price for a lift ticket that is barely over its marginal cost, but the high equipment rental fee keeps generating big profits. Which pricing strategy is the management using?

Price discrimination

Two-part pricing

Commodity bundling

Cross-subsidization

5).

The short run is defined as the time frame:

in which there are no fixed factors of production.

in which there are fixed factors of production.

less than one year.

less than three years.

6).

Fixed costs exist only in:

the long run.

capital-intensive markets.

the short run.

labor-intensive markets.

7).

Top of Form

Non-fed ground beef is an inferior good. In economic booms, grocery managers should:

increase their orders of non-fed ground beef.

reduce their orders of non-fed ground beef.

not change their orders of non-fed ground beef.

neither increase, reduce, nor maintain their current orders for non-fed ground beef.

Bottom of Form

8).

Which of the following pricing strategies is NOT used in markets with special cost and demand structures?

Peak-load pricing

Cross-subsidization

Transfer pricing

Low-price guarantees

9).

A perfectly competitive firm faces a:

perfectly elastic demand function.

perfectly inelastic demand function.

demand function with unitary elasticity.

None of the answers is correct.

10).

The special demand structure that induces a firm to use a cross-subsidization strategy is:

perfect substitution among products.

imperfect substitution among products.

independent demand for products.

interdependent demand for products.

11).

Which of the following factors reduces the need for government involvement in the marketplace?

The presence of externalities

The incentive to rent-seek

The need for public goods

Incomplete information

12).

Which of the following statements is true?

A mineral rights auction is not the same as a common-value auction.

An auctioneer is always indifferent between different kinds of auctions.

The Dutch and first-price, sealed-bid auctions are strategically equivalent.

An English auction always yields lower expected revenues than a second-price, sealed-bid auction.

13).

Which of the following is true concerning negative externalities?

Firms tend to produce more than the efficient level of output.

Society gains because firms do not pay the external costs of production.

Perfect competition is better than monopoly from the viewpoint of society even in the presence of negative externalities.

With negative externalities, a monopoly will always produce an output level less than is socially efficient.

14).

Which of the following is true under monopoly?

P > ATC

P > MC

P = MR

P = ATC

15).

Differentiated goods are NOT a feature of a:

perfectly competitive market.

monopolistically competitive market.

monopolistic market.

perfectly competitive market and monopolistic market.

16).

Producer surplus is measured as the area

below the demand curve and above the market price.

above the demand curve and below the market price.

above the supply curve and below the market price.

below the supply curve and above the market price.

17).

Jaynet spends $25,000 per year on painting supplies and storage space. She recently received two job offers from a famous marketing firm – one offer was for $105,000 per year, and the other was for $85,000. However, she turned both jobs down to continue a painting career. If Jaynet sells 30 paintings per year at a price of $9,000 each:

a. What are her accounting profits?

$

b. What are her economic profits?

$

18).

You are the manager of a monopoly that sells a product to two groups of consumers in different parts of the country. Group 1’s elasticity of demand is -2, while group 2’s is -4. Your marginal cost of producing the product is $40.

a. Determine your optimal markups and prices under third-degree price discrimination.

Instruction: Round your answers to two decimal places.

Markup for group 1:
Price for group 1: $

Markup for group 2:
Price for group 2: $


b. Which of the following are necessary conditions for third-degree price discrimination to enhance profits.

Instructions: You may select more than one answer. Click the box with a check mark for the correct answers and click twice to empty the box for the wrong answers. You must click to select or deselect each option in order to receive full credit.

At least one group has elasticity of demand less than one in absolute value.

There are two different groups with different (and identifiable) elasticities of demand.

We are able to prevent resale between the groups.

At least one group has elasticity of demand greater than 1 in absolute value.

19).

You are the manager of a firm that receives revenues of $60,000 per year from product X and $80,000 per year from product Y. The own price elasticity of demand for product X is -1.5, and the cross-price elasticity of demand between productY and X is -1.4.

How much will your firm's total revenues (revenues from both products) change if you increase the price of good X by 2 percent?

Instructions: Round your answer to the nearest dollar. Include a minus (-) sign if applicable.

$

1. A reason why there is more competition in the restaurant industry than in the music streaming industry is that restaurants

A.unlike music streaming? companies, have to abide by government sanitation rules.

B.have to cater to a variety of consumer tastes while music streaming companies do not.

C.have more elastic demand for their product compared to music streaming companies.

D.unlike music streaming? companies, do not have significant economies of scale.

2. Why would a government use a patent to block entry to some markets if this hinders competition especially when governments generally promote? competition?

A.Patents are justified because they are an important means for creating network externalities.

B.Patents encourage firms to spend money on research necessary to create new products.

C.Politicians sometimes succumb to pressure from lobbyists to grant favors to businesses for political reasons.

D.Patents are an important source of government revenue.

3.Suppose we can divide all the goods produced by an economy into two? types: consumption goods and capital goods. Capital? goods, such as? machinery, equipment, and? computers, are goods used to produce other goods.

Suppose a technological advance occurs that affects the production of consumption goods but not capital goods.

If a technological advance occurs that affects the production of consumption goods but not capital?goods, then the production possibilities frontier will

A.remain unchanged.

B.shift outward along the consumption goods axis.

C. shift outward along the capital goods axis.

D. shift outward along both axes.

The new production possibilities frontier will indicate that with the technological? advance, more (CAPITAL GOODS /// CONSUMPTION GOODS /// OF BOTH GOODS) can be produced.

4. Market failure is best described as

A.All of the above.

B.when consumption occurs at low social benefit.

C.when the market fails to produce the efficient level of output.

D.when the market fails to produce deadweight loss.

E.when production occurs at high social cost.

The market will fail when which of the following? happen????(Check all that? apply.)

A.When property rights are incomplete.

B.When there is a market surplus.

C.When there is scarcity.

D.When it is difficult to enforce property rights.

E.When there is a market shortage

5.In which of the following market structures is price discrimination? possible?

??????a. perfect competition

??????b. monopoly

??????c. oligopoly

??????d. monopolistic competition

A.?b, c, and d only

B.?a, b,? c, and d

C.c and d only

D.b and c only

6. How do market economies ultimately determine what goods and services are? produced, how the goods and services will be? produced, and who will receive the goods and? services?

A.The government determines what goods and services are? produced, how to produce? them, and who will receive them.

B.Firms determine what goods and services are produced and how to produce? them, and markets determine who will receive them.

C.Consumers determine what goods and services are? produced, firms determine how to produce? them, and equity determines who will receive them.

D.Consumers determine what goods and services are? produced, firms determine how to produce? them, and markets determine who will receive them.

E.Firms determine what goods and services are? produced,technology determines how to produce? them, and consumers determine who will receive them.

7. For monopolistically competitive firms is it always likely in the? long-run to have? zero-economic profit?

Monopolistically competitive firms in the? long-run

A.may continue to earn profit by convincing consumers their products are differentconvincing consumers their products are different.

B.will not continue to earn profit because the cost of production will rise as new firms enter the market.

C.will not continue to earn profit because monopolistically competitive firms produce identical products.

D.will continue to earn profit due to barriers to new firms entering the market.

E.may continue to earn profit by instead beginning to produce a product identical to competitors.

8. In monopolistically competitive? markets, what is a factor under a? firm's control that determines whether it will be? successful?

A. Upper A firm's ability to differentiate its productA firm's ability to differentiate its product.

B.Consumer preferences.

C.Factors that affect all firms in a market.

D.Chance events.

E.Both a and b.

9. From the list? below, select the necessary condition in order to achieve successsful price discrimination.

A. The seller must possess market power.

B. Buyers must have identical inelastic demands.

C. Transactions costs must be zero.

D.The buyer must possess market power.??

10.Suppose Dell is currently selling 3,000,000 computers per year. However, managers at Dell are considering whether to increase production by 300,000 computers. One manager explains that after increasing production by this? amount, total profit would be? $100 million. Given this? information, should Dell increase production by 300,000 computers??

A.?Yes, because Dell would earn a profit.

B.Information about the additional cost incurred from producing 300,000additional computers is required to answer this question.

C.?No, because increasing production by 300,000 computers would decrease the price of computers.

D.Information about the additional revenue earned and the additional cost incurred from producing 300,000 additional computers is required to answer this question.

E. Information about the total revenue earned and the total cost incurred from producing 3,300,000 computers is required to answer this question.

11. The Majestic box office sells tickets for the same play at different? prices: a lower price to those who opt for the seats at the back of the theatre and a higher price for those who purchase seats in the? front, around the stage. Which of the following statements is? true?

A. This is an example of product differentiation not price discrimination.

B. The theatre practices first degree price discrimination by setting prices based on willingness to pay.

C. Charging two different prices is an effective way to avoid an excess demand for play? tickets; the higher price lowers quantity demanded to some extent.

D. Since the cost of producing the play does not change with the seating? configuration, this is evidence of price discrimination based on market segmentation.