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ECON 102 Lecture Notes - Lecture 7: Price Controls, Price Floor, Price Ceiling

42 views5 pages
hramirez123
12 Mar 2017
School
SDSU
Department
Economics
Course
ECON 102
Professor
C.Hilmer

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Document Summary

Ch. 7 consumers producers and the efficiency of markets: welfare economics, allocation of resources, how much of each good is produced, which producers produce it, which consumers consume it, welfare economics. Studies how the allocation of resources affect the economic well- being: willingness to pay (wtp, a buyers willingness to pay for a good, relates to demand, consumer surplus. The amount a buyer is willing to pay minus the amount the buyer actually pays. Total cs equals the area under the demand curve above the price from 0 to q: marginal seller. Seller who would leave the market if the price lowered: producer surplus. The amount a seller is paid for a good minus the seller"s cost: ps=p-cost. Elasticity measures how much one variable responds to changes in another variable. One type of elasticity measures how much demand for your website will fall is you raise your price. Price elastic of demand = % change in quantity/ % in price.

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Related Questions

Considering the demand side of a market for a good, it is reasonable to expect that:
i. demand curves for a given good are identical between consumers
ii. demand curves for a given good differ between consumers
iii. an individual has identical demand curves for different goods
iv. an individual has different demand curves for different goods

i
ii
iii
iv
i and iii
ii and iv

Suppose the market demand curve for a good is represented by the linear equation Q = 60 - 0.75P. If the market price were to increase from P = $20 to P = $40, then holding all other factors constant:

the quantity demanded would decrease by 10 units and total expenditures on the good would decrease by $400
the quantity demanded would decrease by 15 units and total expenditures on the good would increase by $300
the quantity demanded would decrease by 30 units and total expenditures on the good would increase by $1200
the quantity demanded would increase by 20 units and total expenditures on the good would decrease by $800
the quantity demanded would increase by 10 units and total expenditures on the good would increase by $100
the quantity demanded would increase by 25 units and total expenditures on the good would increase by $1000

A perfectly competitive firms supply curve for a good identifies the:
i. minimum quantity supplied at each price, holding all other factors constant
ii. firms minimum willingness to accept for each incremental unit of the good (e.g., the first unit, second unit, etc.), holding all other factors constant
iii. maximum quantity supplied at each price, holding all other factors constant
iv. firms maximum willingness to accept for each incremental unit of the good (e.g., the first unit, second unit, etc.), holding all other factors constant

i and ii
i and iv
ii and iii
iii and iv

Considering the supply side of a market for a good, if a firms supply curve were vertical, then:

the law of supply holds, and quantity supplied is completely insensitive to changes in price
the law of supply holds, and quantity supplied is highly sensitive to changes in price
the law of supply fails to hold, and quantity supplied is completely insensitive to changes in price
the law of supply fails to hold, and quantity supplied is highly sensitive to changes in price
none of the above

The determinants of supply are:
i. factors other than price that will affect the quantity of a good or service a firm is willing and able to purchase
ii. factors that affect a producers maximum willingness-to-accept to produce various quantities of a good
iii. factors that affect a producers minimum willingness-to-accept to produce various quantities of a good

i
ii
iii
i and ii
i and iii

The market supply curve for a good is derived by:
i. horizontally summing the supply curves of the individual firms in the market
ii. vertically summing the supply curves of the individual firms in the market
iii. summing the quantity supplied by each firm at a given price and then repeating this over the range of prices

i
ii
iii
i and ii
i and iii

If the level of technology used in the production of a good improves, and assuming the quality of the good does not change, then:
i. more output may be obtained with a given amount of inputs compared to before the technological improvement
ii. a given amount of output may be obtained with fewer inputs compared to before the technological improvement
iii. the firm will increase its use of other inputs, such as the number of workers it employs
iv. market demand for the good will increase

i
ii
iii
iv
i and ii
i, ii, and iii
i, ii, and iv
i, ii, iii, and iv

Considering the market for gasoline, which of the following would result in an increase in market supply?
i. a decrease in the price of gasoline
ii. an improvement in oil extraction and refining technologies
iii. an increase in the wage rates paid to gasoline refinery workers
iv. a decrease in the price of crude oil, a key input used to produce gasoline
v. the imposition of a federal gasoline tax aimed a decreasing the emission of greenhouse gases

i
ii
iii
iv
v
ii and iv
i, ii, and iv
i, ii, iii, and iv
i, ii, iii, iv and v

Suppose a market has two identical sellers. If each sellers supply function is given by P = 20 + Q, then the market supply function is:

P = 20 + 0.5Q
P = 20 + 2Q
P = 40 + Q
P = 40 + 2Q

From the market framework discussed in class and the readings, it may be concluded that in order for a good to be exchanged between a seller and a buyer, it must be that:

buyer maximum willingness-to-pay is greater than seller minimum willingness-to-accept
buyer maximum willingness-to-pay is greater than or equal to seller minimum willingness-to-accept
buyer minimum willingness-to-pay is greater than or equal to seller maximum willingness-to-accept
buyer minimum willingness-to-pay is greater than seller maximum willingness-to-accept

If the market demand function is given by P = 80 - 0.3Q and the market supply is given by P = 20 + 0.1Q, then the equilibrium price and quantity are:

P = $35 and Q = 150
P = $65 and Q = 150
P = $26 and Q = 60
P = $28 and Q = 80

Of concern are the affects of sustained summer droughts on the domestic supply of wheat. Noting that wheat is a primary ingredient in the production of bread and that potatoes are a substitute for bread, if the supply of wheat declines then it is reasonable to expect:

the price of wheat to fall, the supply of bread to increase, and the demand for potatoes to increase
the price of wheat to fall, the supply of bread to increase, and the demand for potatoes to decrease
the price of wheat to rise, the supply of bread to decrease, and the demand for potatoes to decrease
the price of wheat to rise, the supply of bread to decrease, and the demand for potatoes to increase
the price of wheat to rise, the supply of bread to increase, and the demand for potatoes to increase

the price of wheat to rise, the supply of bread to increase, and the demand for potatoes to decrease

Suppose a perfectly competitive market is initially in equilibrium. If market demand and supply decrease simultaneously, then equilibrium:

price will rise, but the equilibrium quantity may either rise, fall, or remain unchanged
quantity will rise, but the equilibrium price may either rise, fall, or remain unchanged
price will fall, but the equilibrium quantity may either rise, fall, or remain unchanged
quantity will fall, but the equilibrium price may either rise, fall, or remain unchanged

Considering the demand side of a market for a good, the consumer surplus derived by an individual:
i. is the difference between the maximum amount the consumer is willing to pay on each unit and the minimum prices that producers are willing to accept
ii. is the difference between the minimum amount the consumer is willing to pay on each unit and the price he/she
actually pays
iii. is the difference between the maximum amount the consumer is willing to pay on each unit and the price he/she actually pays
iv. will decrease if price increases

i
ii
iii
i and iv
ii and iv
iii and iv

Suppose the market demand for a good is described by the equation P = 120 - 2Q. If a change in market supply results in price decreasing from P0 = $80 to P1 = $70, then the resulting change in consumer surplus is:

$225
$400
$575
$625
$750

7) Indicate whether each of the following statements is true or false, and explain why.

A. Producer surplus tends to fall as the supply curve becomes more elastic.

B. Consumer surplus tends to rise as demand becomes more elastic.

C. The market demand curve indicates the minimum price buyers are willing to pay at each level of production.

D. The market supply curve indicates the minimum price required by sellers as a group to bring forth production.

E. Consumer surplus is the amount that consumers are willing to pay for a given good or service above and beyond the amount actually paid.

Under a binding price ceiling, what does the change in consumer surplus represent?
A) The gain in surplus for those buyers who can still purchase the product at the lower price.
B) The loss in surplus for those buyers who previously purchased some units of the good at the higher price, but these units are no longer produced at the lower price.
C) The loss in surplus for those buyers who would like the purchase the excess demand created by the price ceiling policy.
D) Both A and B are correct.
E) Both A and C are correct.

When the market price is held above the competitive level, the deadweight loss is composed of:

A) producer surplus losses associated with units that used to be traded on the market but are no longer exchanged.

B) consumer surplus losses associated with units that used to be traded on the market but are no longer exchanged.
C) producer and consumer surplus losses associated with units that used to be traded on the market but are no longer exchanged.
D) There is no deadweight loss if the government uses a price floor policy to increase the price.

Compared to a tariff, an import quota, which restricts imports to the same amount as the tariff, will leave the country as a whole
A) worse off than a comparable tariff.
B) not as bad off as a comparable tariff.

C) about the same as a comparable tariff.

D) Any of the above can be true.

What is the welfare impact of a subsidy policy?
A) Producer surplus increases, consumer surplus declines, and total welfare declines.
B) Producer and consumer surplus increase, and these gains are larger than the government cost.

C) Producer and consumer surplus increase, and these gains are smaller than the government cost.

D) Producer surplus increases, consumer surplus declines, and total welfare increases due to the subsidy program.

Why is there a deadweight loss associated with subsidy payments?
A) There is no deadweight loss from a subsidy.
B) Quantity supplied is less than the equilibrium amount, so consumers and producers lose surplus value on those units that are no longer produced.
C) Quantity supplied exceeds the equilibrium amount, and consumer willingness to pay for these additional units is smaller than the marginal cost of producing them.
D) The subsidy payment does not distort quantities in the market, but the government cost exceeds consumer willingness to pay for the quantity demanded.