8. Which is correct in describing an "equilibrium mixed strategy"?
a. No player can benefit from unilaterally leaving it.
b. It is the best mixed strategy for both players in terms of reward for row player and loss for column player.
c. Both a and b.
9. What if both players in a zero-sum game leave the equilibrium mixed strategy?
a. The row player will be better off.
b. The column player will be worse off.
c. Either a or b, but the value of the game will change.
10. What does the "prisoner's dilemma" tell us?
a. People by their nature always choose to do what is best for all of them collectively.
b. People by their nature tend to choose to do what would not result in the best outcome for them collectively.
(2 extra credit)
11. How to implement an equilibrium mixed strategy, such as (0.3 for strategy A, 0.7 for strategy B)? (That is, how to pick strategy according to the mixed strategy?)
a. Select strategy B always since 0.7>0.3.
b. Select strategy A for three times, then select strategy B for seven times. Then, repeat this process.
c. Randomly select a strategy between A and B, with 30% chance selecting A and 70% chance selecting B.
d. Select 30% of strategy A and 70% of strategy B.