1) When a single person (or small group) has the ability to influence market prices,
there is
a.competition.
b.market power.
c.an externality.
d.a lack of property rights.
2) Scenario 8-1
Erin would be willing to pay as much as $100 per week to have her house cleaned.
Ernesto’s opportunity cost of cleaning Erin’s house is $70 per week.
Assume Erin is required to pay a tax of $5 when she hires someone to clean her house.
Which of the following is true?
a.Erin will continue to hire Ernesto to clean her house, but her consumer surplus will
decline.
b.Ernesto will continue to clean Erin’s house, and his producer surplus will increase.
c.Total economic welfare (consumer surplus plus producer surplus plus tax revenue)
will decrease.
d.All of the above are correct.
3) A free rider is a person who pays for a good but does not receive the benefit of it.
a.True
b.False
4) Costa Rica allows trade with the rest of the world. We can determine whether Costa
Rica has a comparative advantage in producing pharmaceuticals if we
a.know whether Costa Rica imports or exports pharmaceuticals.
b.compare the world price of pharmaceuticals to the price of pharmaceuticals that
would prevail in Costa Rica if trade with the rest of the world were not allowed.
c.compare the quantity of pharmaceuticals consumed in Costa Rica with the quantity of
pharmaceuticals that would be consumed in Costa Rica if trade with the rest of the
world were not allowed.
d.All of the above are correct.