7) Because national defense is potentially subject to free riding, a private sector market for
national defense would lead to
A) the efficient amount of national defense if there is free riding.
B) more than the efficient amount being produced if there is free riding.
C) less than the efficient amount being produced if there is free riding.
D) less than the efficient amount being produced if there is not free riding.
E) None of the above answers is correct.
8) Which of the following is a correct statement?
A) To obtain the economy’s marginal benefit for a public good, marginal benefits of all
individuals at each quantity have to be added.
B) To obtain the economy’s marginal benefit for a public good, the quantity that all individuals
are willing to buy at each price must be added.
C) To obtain the economy’s marginal benefit curve for a public good, we sum the individual
demand curves horizontally.
D) Because public goods are nonexcludable, the economy’s marginal benefit curve for a public
good is the same as its marginal cost curve.
E) None of the above answers is correct.
9) If we know everyone’s individual marginal benefit curve for a public good, then the
economy’s marginal benefit curve for that public good can be found by
A) finding the average of everyone’s marginal benefit.
B) summing horizontally the amount of everyone’s marginal benefit.
C) summing vertically the amount of everyone’s marginal benefit.
D) averaging either horizontally or vertically the amount of everyone’s marginal benefit.
E) none of the above, it is impossible to find this value.