Two neighbors, Alice and Bob, live in a building with poor sound insulation. Alice likes to play music loud, and Bob likes silence.
economics
Description
Econ 490 (economics of
coordination), spring 2020
Quiz 6: 95 points
Due by 11:59 pm Wednesday April 29
1- Two
neighbors, Alice and Bob, live in a building with poor sound insulation. Alice
likes to play music loud, and Bob likes silence. The building coop board will
enforce a curfew forbidding loud music playing after a certain time, x, measured as hours after 8 pm. Thus if x = 3 the curfew will be 11 pm. There is also the
possibility that Alice can pay Bob a certain amount per week, y, to extend the curfew hours. If y < 0 the payment would go from Bob to Alice. Their
utility functions are:
Alice: 
;
Bob: 
A. [10points] What are Alice and Bob's own preferred curfew times,
ignoring the presence of the other? If the coop board sets x = 3, and there is no payment
between them, what would their utilities be? Is setting x =3 lead to a Pareto optimal
outcome?
B. [6 points] What curfew
time, 
, maximizes the sum of their
utilities, 
? What is the sum of their utilities at ? Does this maximization determine the payment
y? Explain.
C. [8 points] What is the minimum payment Alice could offer Bob on a take-it-or-leave-it basis to shift the curfew to 1 am (x = 5)? What would their payoffs be if they made this deal? Is this a Pareto-improvement over the board curfew?
D. [6 points] What is the payment that would equalize their
utilities, 
? What would their payoffs be with this arrangement?
E. [5 points] What payment would equalize their gains from the
deal, 
−1000 = 
− 1500? What would their utilities be with this
arrangement?
F. [5 points] Consider the three payment deals described in parts (c), (d), and {e). Which ones rae efficient and which is more fair?
