Recall from Exercise S1 the travelers reporting the value
of their lost souvenirs. Assume that a third traveler phenotype exists in the
population. The third traveler type is a mixer; she plays a mixed strategy,
sometimes reporting a value of $100 and sometimes reporting a value of $50.
(a) Use your knowledge of mixed strategies in rationally
played games to posit a reasonable mixture for the mixer phenotype to use in
(b) Draw the three-by-three payoff table for this game
when the mixer type uses the mixed strategy that you found in part (a).
(c) Determine whether the mixer phenotype is an ESS of