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ECON 2000 Chapter : ECON 2000 Chapter 5

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azuremammoth471
15 Mar 2019
School
LSU
Department
Economics
Course
ECON 2000
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All

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Document Summary

Chapter 5: elasticity: elasticity: a general concept used to quantify the response in one variable when another variable changes, elasticity of a with respect to b = % a. % b: the slope of a demand curve is an inadequate measure of responsiveness because its values depend on the units of measurement used. Q1: % change in price , = change in price x 100% P1: = p2 - p1 x 100% % change in income: if the is negative, the goods are complements, if zerio (or close to zero) the goods are unrelated to each other. If this is positive, the goods are substitutes. % change in price of x: elasticity of supply: a measure of the response of quantity of a good supplied to a change in price of that good. Likely to be positive in output markets: elasticity of supply = % change in quantity supplied.

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Related Questions

I've completed this but I want to check my answers. Thanks

1) List and briefly explain three economic variables that shift the Demand Curve.

2) Define opportunity cost. How is opportunity cost used to determine comparative advantage?

3) In the market for calculators we observe that the price has fallen and more calculators are being sold. What might have happened to cause this change?

4) The price of gasoline rises. What would we expect to see happen in the market for cars with high gas mileage (like the Prius)?

5) What is the effect of a price floor (a price set above equilibrium) in the sugar market. Why does the government impose price floors?

6) Define the price elasticity of demand. Why is this concept important in economics?

7) Define the income elasticity of demand. Why is this concept important in economics?

8) List and briefly explain three economic variables that shift the Supply Curve.

9) A firm lowers of price of its product by 10% and consumers buy 5% more of the product. What is the price elasticity of demand for the product?

10) If the price elasticity of demand for a product is elastic, explain what will happen to total revenue when the price is decreased.

11) What is the difference between a change in quantity supplied and a shift in supply?

12) Write out the equation for the arc price elasticity of demand using symbols. Then write out the equation using the following numbers: the price increases from $8 to $10 and the quantity demanded falls from 3 units to 2 units. (Do not calculate the equation.)
Three Questions (no choice)

Long Answer Questions (20 points each)

Be certain to label all graphs. Write all explanations in complete sentences.

1) Draw a supply and demand graph for the market for oranges.

Illustrate and explain what happens with when a freeze destroys part of the crop.

2) Draw an increasing cost Production Possibilities Curve (PPC) for the U.S. with computers on the horizontal axis and textiles on the vertical axis.
a) What is the definition of a PPC

b) Choose a point on the PPC. What does this point represent?

c) Illustrate the opportunity cost of producing more computers.

d) Explain a point inside the PPC.

e) Explain a point outside the PPC.

f) Technological change reduces the cost of producing computers and textiles, illustrate and explain what happens in the graph.

g) Choose a new point that represents production and consumption after technological change.

h) Where does the U.S. produce and consume relative to before technological change.

i) Illustrate and explain the opportunity cost of producing more computers after technological change.

3) Define the price elasticity of demand. What does elastic, inelastic and unitary price elasticity of demand mean? For each of the three values of the price elasticity of demand explain what happens to quantity demanded and total revenue when the price of the product is increased? What about when the price of the product is decreased?

4) Using a supply and demand graph in the market for bread, illustrate and explain the effect of a price ceiling (Price set below equilibrium price).

Why would the government impose such a price ceiling?

How is the available bread distributed to consumers when there is a price ceilin

Managers of a monopoly under rate of return regulation have an incentive to


a. underestimate the firm's costs.

b. exaggerate the firm's costs.

c. minimize the monopoly's deadweight loss.

d. exaggerate the firm's profit.

e. earn zero economic profit.


Which of the following is correct?
i. All linear demand curves have a constant slope and a constant price elasticity of demand.
ii. The price elasticity of demand changes while moving along a downward-sloping linear demand curve.
iii. The magnitude of the slope of all linear demand curves is equal to the price elasticity of demand.


a. iii only.

b. ii only.

c. i, ii, and iii.

d. i only.

e. i and ii.


________ natural monopolies is a commonly used, potential solution to the problems presented by natural monopolies.


a. Giving incentives to firms to become

b. Regulating

c. Breaking up firms that are

d. Outlawing price discrimination by

e. Refusing to grant patents to


In the short run, a perfectly competitive firm


a. must suffer an economic loss.

b. must earn an economic profit.

c. might make an economic profit, incur an economic loss, or make a normal profit.

d. must make either an economic profit or a normal profit.

e. must earn a normal profit.

To determine if a market is an oligopoly, we need to determine if


a. cartels are legal in their market.

b. the firms are so few that they recognize their mutual interdependencies.

c. the firms make identical or differentiated products.

d. there are many firms in the market.

e. the market's HHI is less than 900.


Increasing marginal returns to labor


a. occur only when there are increasing marginal returns to capital.

b. are the result of specialization and division of labor in the production process.

c. describe the portion of a total product curve where the marginal product is negative.

d. mean that two workers produce less than twice the output of one worker.

e. occur when a particularly efficient worker is employed.

The return to entrepreneurship, which is what the firm's owner could earn running another business, is known as


a. entrepreneur's profit.

b. economic profit.

c. excessive profit.

d. accounting profit.

normal profit.

Both price supports and a price floor can


a. decrease the price below the equilibrium price.

b. increase consumer surplus.

c. create a deadweight loss.

d. decrease output below the equilibrium quantity.

e. have no effect on producer surplus.

In economics, cost is ________, and benefit is ________.

a. the amount of money that you pay for something; the amount of money that someone else is willing to pay you
b. what you must give up to get something; what you are willing to give up to get it
c. the amount of money that you pay on the margin; the amount of money that you receive on the margin
d. what you are willing to give up to get it; what you must give up to get something
e. what you are willing to pay on the margin; what the government pays you when you are unemployed or retired

If a substitute good is easy to find, then demand for a good is


a. unit elastic.

b. perfectly inelastic.

c. elastic.

d. inelastic.

e. Substitutes don't have any effect on elasticity.







I have the following questions for my Managerial Economics course.

1.

A principal-agent problems occur when managerial decisions are not consistent with the firm's shareholders' interests.

A) True
B) False

2.

A firm making more than a normal profit may still be experiencing an economic loss.

A) True
B) False

3.

An inferior good is a good whose demand decreases as its prices decreases.

A) True
B) False

4.

Assuming that crude oil is an input to automobile tires as well as to gasoline, a reduction in the tariff on imported crude oil would likely result in an increase in the number of tires sold but tire prices may increase or decrease.

A) True
B) False

5.

Other things remaining unchanged, advertisement would likely make demand for a good more price elastic.

A) True
B) False

6.

The cross price elasticity demand for a good with respect to the price of a complementary good is negative.

A) True
B) False

7.

When the marginal product of labor is smaller than its average product, marginal cost will be smaller than average variable cost.

A) True
B) False

8.

With capital measured along the vertical axis and labor along the horizontal axis the slope of an isoquant is equal to the ratio between the price of capital over the price of labor.

A) True
B) False

9.

If the ratio between the price of labor and the price of capital (w/r) is smaller than the ration between the marginal product of labor and the marginal product of capital, the firm should hire more capital.

A) True
B) False

10.

Normally the ratio between the price of a variable input and the marginal product of that input is equal to marginal cost.

A) True
B) False

11.

When labor is a variable input the product of wage and marginal product of labor is equal to the profit-maximizing price.

A) True
B) False

12.

If the price falls below the average total cost the firm may not shut down in the short run.

A) True
B) False

13.

When a perfectly competitive firm is producing at its profit maximizing level of output, its MR is equal to price and its MC while it may or may not be making an economic profit.

A) True
B) False

14.

The price a profit maximizing monopoly charges is always greater than its marginal cost as well as it MR while it may not be greater than its ATC.

A) True
B) False

15.

As new firms enter a monopolistically competitive market, the demand faced by each competing firm becomes more inelastic.

A) True
B) False

16.

The long-run equilibrium of a monopoly is characterized by its price being equal to its MR but always greater than its ATC.

A) True
B) False

17.

A monopolistically competitive firm sets its price equal to its MR, while keeping it above MC.

A) True
B) False

18.

We say that the long-run equilibrium of a monopolistically competitive firm reflects excess capacity because its MC is not equal to its ATC.

A) True
B) False

19.

In a duopoly with a zero marginal cost, according to the Cournot model, at equilibrium the sum of the two firms' output would be more than 50 percent of the market demand at a zero price.

A) True
B) False

20.

In the kinked demand curve model it is assumed that the demand faced by an oligopoly is less elastic when it lowers the price but more elastic when it raises the price.

A) True
B) False

21.

A distinguishing characteristic of monopolistically competitive market is price discrimination.

A) True
B) False

22.

The general explanation for the relative price stability in an oligopolistic market is the existence of some degree of decision interdependency among the firms in the market.

A) True
B) False