Deck 37: A: Public Goods

Question 1

Anton,Bertha,and Cecilia all consume crackers and music.Crackers are a pure private good and music is a pure public good.Their utility functions are U A (c A,m)=c A m,U B (c B,m)= c B m,and U B (c C,m)= 2c C m,where c A is Antons cracker consumption,c B is Berthas cracker consumption,c C is Cecilias cracker consumption,and where m is the amount of music jointly consumed by all three of them.Music is measured in hours.Crackers cost $1 each.Music costs $10 an hour.Antons wealth is $30,Berthas wealth is $50,and Cecilias wealth is $20.What is the efficient amount of music for them to consume?

A) 2 hours
B) 3 hours
C) 4 hours
D) 5 hours
E) 6 hours

Answer 1

5 hours

Question 2

One of the problems with the Clarke tax mechanism is that when it is used,people have an incentive to lie about their preferences.

Answer 2

False

Question 3

Bob and Ray are thinking of buying a sofa.Bob's utility function is U_B (S,M_B)= (1 + S )M_B and Ray's utility function is U_R (S,M_R)= (3 + S )M_R,where S= 0 if they don't get the sofa and S =1 if they do and where M_B and M_R are the amounts of money they have respectively to spend on their private consumptions.Bob has a total of $2,000 to spend on the sofa and other stuff.Ray has a total of $2,400 to spend on the sofa and other stuff.The maximum amount that they could pay for the sofa and still arrange to both be better off than without it is

A) $2,400.
B) $800.
C) $1,600.
D) $850.
E) $3,200.

Answer 3

$1,600.

Question 4

A small coffee company roasts coffee beans in its shop.The unroasted beans cost the company $2 per pound.The marginal cost of roasting coffee beans is $(150 -10q + q²)/100 per pound when q pounds are roasted.The smell of roasting beans imposes costs on the company's neighbors.The total amount that neighbors would be willing to pay to have the shop stop roasting altogether is 5q²,where q is the number of pounds being roasted.The company sells its output in a competitive market at $4.50 per pound.What is the socially efficient amount of coffee for the company to roast?

A) 10 pounds.
B) 15 pounds.
C) the square root of 10 pounds.
D) 45 pounds.
E) None of the above.

Question 5

To say that preferences are single peaked means that everybody either prefers more public goods to less or everybody prefers less public goods to more.

Question 6

Which of the following is the best example of a public good as defined in your text?

A) Cable television
B) Day care
C) Radio broadcasts
D) Medical care
E) Disneyland

Question 7

Bob and Ray are thinking of buying a sofa.Bob's utility function is U_B (S,M_B)=(1 + S )M_B and Ray's utility function is U_R (S,M_R)= (3 + S )M_R,where S = 0 if they don't get the sofa and S = 1 if they do and where M_B and M_R are the amounts of money they have respectively to spend on their private consumptions.Bob has a total of $800 to spend on the sofa and other stuff.Ray has a total of $1,600 to spend on the sofa and other stuff.The maximum amount that they could pay for the sofa and still arrange to both be better off than without it is

A) $533.33.
B) $800.
C) $1,200.
D) $450.
E) $1,600.

Question 8

Bob and Ray are thinking of buying a sofa.Bob's utility function is U_B (S,M_B)=(1 + S )M_B and Ray's utility function is U_R (S,M_R)= (3 + S )M_R,where S = 0 if they don't get the sofa and S = 1 if they do and where M_B and M_R are the amounts of money they have respectively to spend on their private consumptions.Bob has a total of $1,200 to spend on the sofa and other stuff.Ray has a total of $1,600 to spend on the sofa and other stuff.The maximum amount that they could pay for the sofa and still arrange to both be better off than without it is

A) $1,500.
B) $533.33.
C) $550.
D) $1,000.
E) $2,000.

Question 9

If the supply of public goods is determined by majority vote,then the outcome must be Pareto optimal.

Question 10

Lucy's utility function is 2X_L + G and Melvin's utility function is X_MG,where G is their expenditures on the public goods they share in their apartment and where X_L and X_M are their respective private consumption expenditures.The total amount they have to spend on private goods and public goods is $30,000.They agree on a Pareto optimal pattern of expenditures in which the amount that is spent on Lucy's private consumption is $9,000.How much do they spent on public goods?

A) $7,000
B) $14,000
C) $8,050
D) $3,500
E) There is not enough information here to be able to determine the answer.

Question 11

The Sons of Knute had a hunting lodge up on Loon Lake that burned down last winter.They plan to rebuild it this summer and are trying to decide how large the new lodge should be.The organization has 50 members.The marginal rate of substitution of each of them between square feet of hunting lodge and money for other goods is 1.- 0.0004y,where y is the size of the hunting lodge in square feet.What is the efficient size for the new hunting lodge?

A) 1,000 square feet
B) 1,200 square feet
C) 2,000 square feet
D) 2,400 square feet
E) None of the above.

Question 12

A Pareto optimal amount of public goods is shown on a graph (with quantities of public goods on the x axis)by the point at which the horizontal sum of the marginal rate of substitution curves meets the marginal cost curve.

Question 13

A quiet town in Kansas has 2,000 people,all of whom have the same preferences.There is one private good and one public good.Each person I in town has utility U(x i,y)=x i + y .5,where x i is private good for person i and y is the amount of public good that the town provides.If the private good costs $1 per unit and the public good costs $10 per unit,then the Pareto optimal amount of public good for the town to provide is

A) 100 units.
B) 500 units.
C) 2,000 units.
D) 8,000 units.
E) 10,000 units.

Question 14

If a pure public good is provided by voluntary contributions,economic theory predicts that in general too little will be supplied.

Question 15

Nadia Comaneci and Mr.X have preferences defined over pizza,p,and trampolines,t.They have identical utility functions,U(p,t)=p+2,000t^1/2.Each pizza costs $1 and each trampoline costs $1,000.Nadia and Mr.X like to share,and indeed trampolines are a public good for them.Pizza,however,is a private good.We don't know their exact incomes,but we do know that each of them earns at least $10,000.

A) The Pareto efficient number of trampolines for them is 4.
B) The Pareto efficient number of trampolines for them is 1.
C) The Pareto efficient number of trampolines for them cannot be determined without knowing how the costs will be shared.
D) The Pareto efficient number of trampolines for them is 2.
E) Since their preferences are homothetic,their income elasticity of demand for pizza is -1.

Question 16

Economists define public goods to be those goods that are supplied by the government and private goods to be those goods that are supplied by the private sector.

Question 17

If preferences are single peaked,then pairwise majority voting among alternative options will not lead to voting cycles.

Question 18

If preferences are single peaked,then everyone will agree about the right amount of public goods to be supplied.

Question 19

A tax imposed on polluters to give them an incentive to make an efficient reduction in pollution is called a Clarke tax.

Question 20

Just north of the town of Muskrat,Ontario,is the town of Brass Monkey,population 6,400.Brass Monkey,like Muskrat,has a single public good,the town skating rink,and a single private good,Labatt Ale.Everyone's utility function is U_i (X_i,Y)= X_i- 81/Y,where X_i is the number of bottles of ale consumed by i and Y is the size of the skating rink in square meters.The price of ale is $1 per bottle.The cost of the skating rink to the city is $4 per square meter.Everyone has an income of at least $5,000.What is the Pareto efficient size for the town skating rink?

A) 360 square meters
B) 480 square meters
C) 240 square meters
D) 725 square meters
E) None of the above.

Question 21

Lucy's utility function is 2X_L +G and Melvin's utility function is X_MG,where G is their expenditures on the public goods they share in their apartment and where X_L and X_M are their respective private consumption expenditures.The total amount they have to spend on private goods and public goods is $33,000.They agree on a Pareto optimal pattern of expenditures in which the amount that is spent on Lucy's private consumption is $9,000.How much do they spent on public goods?

A) $4,000
B) $16,000
C) $8,550
D) $8,000
E) There is not enough information here to be able to determine the answer.