Return to the two-player game tree in part (c) of Exercise U2 in Chapter 3. (a) Draw the game table.

Return to the two-player game tree in part (c) of
Exercise U2 in Chapter 3.

(a) Draw the game table. Make Albus the row player,
Minerva the column player, and Severus the page player. Find all of the Nash
equilibria.

(b) For the equilibria you found in part (a) that are not
subgame-perfect, identify the credibility problems.