Question 15.59

27. Battle of the sexes:

She buys a ticket for:
Boxing Ballet
He buys a ticket for: Boxing (4, 3) (2, 2)
Ballet (1, 1) (3, 4)

27.

There are two equilibria: (Boxing, Boxing) and (Ballet, Ballet). These are sensible equilibrium outcomes, but they require some coordination between the two players.