Three firms share a market. The demand function is P(q1, 92, 93) = 10 – q1 – 92 – 93, where q; is the output of firm i, Player i. The marginal cost per unit for each firm is zero. Suppose firm 1 is a market leader, and that firm 2, and firm 3 choose q2 and q3 simultaneously after observing q1 Find the SPE of this game. How much is produced by firm 2? Numerical answer How much is produced by firm 1, 2, and 3?
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- Problem 3. Consider the following game with three firms. First, firms 1 and 2 si- multancously choose quantities q1 and q2 respectively. After observing firm 1 and 2's quantities, firm 3 chooses its quantity q3. There is no production cost and the inverse demand function is p= 12 – (91 +2 + 93). (a) Compute the SPNE of this game. (b) Give an example of Nash equilibrium s* with s = 4 and s, = 6 , that is not subgame perfect. game theory questionConsider the game having the following normal form. Which of the following strategies of the column player dominates other strategies? COLUMN PLAYER A C 6, 5 -5, 11 7,9 ROW PLAYER Y 10, 6 7, 10 11, 9 11, 7 -4, 11 8,4 W 11, 3 -1, 10 7,8 C O A B.The payoff matrix below shows the payoffs for Firm A and Firm B, each of whom can either "cooperate" or "cheat." The numbers in parentheses are (payoff for A, payoff for B). Firm B Cooperate Cooperate (30, 30) (x, 10) Cheat (10, X) (20, 20) Firm A Chent If x = 40, the Nash equilibrium is. O a. (Firm A: cheat, Firm B: cheat) O b. (Firm A: cooperate, Firm B: cheat) O c. (Firm A: cheat, Firm B: cooperate) O d. (Firm A: cooperate, Firm B: cooperate) O e. There is no Nash equilibrium for this value of x.
- Consider the following extensive form game between player 1 and player 2. T B (2, 2) L R R (3, 1) (0, 0) (5, 0) (0, 1) (a). Find the normal form representation of this game. (show the bimatrix) (b). Find all pure strategy NE. (c). Which of these equilibria are subgame perfect?There are two firms in the market (duopoly). These two firms are competingsimultaneously. The first firm chooses its output level (x) by predicting the second firm’soutput (y). Let c denote the total cost function c(x) = x and c(y) = y. Also, let’s assumethat the inverse demand function is p(Y) = 7 - Y where Y = x + y. (1) Obtain the reactionfunction of the first firm. (2) Find the equilibrium (output and profit of each firm) whentwo firms simultaneously competeConsider the game having the following normal form. Which of the following strategies of the row player is a dominant strategy? COLUMN PLAYER A B 6, 5 -5, 11 7,9 ROW PLAYER Y 10, 6 7, 10 11, 9 11, 7 -4, 11 8, 4 W 11, 3 -1, 10 7,8 O W Y. Z. No dominant strategy
- Find the unique Nash equilibrium of a game with the following payoff matrix: Player 2 2 4 1 (6, 7) (13, 8) (9, 9) Player 1 3 (4, 4) (7, 7) (7, 6) (7, 7) (11, 11) (7, 13) О a. (3, 2) O b. (5, 4) О с. (11, 11) O d. (1, 6) O e. There is no unique Nash equilibrium.Consider the infinite repeated two-player game where at each stage the play- ers play the non-zero-sum game given by A В A (5, 5) (0,7) В (7, 0) | (2, 2) (a) Consider the following strategies: SA: always play A. SB: always play B. • St: play A on the first stage, thereafter copy what the other player did in the preceding stage. Suppose that the total payoff involves a discount factor 8, and that both players are restricted to the pure strategies SA, SB, and sT. Determine the set of d for which (ST, ST) is a Nash equilibrium. (b) Use the one stage deviation principle to determine whether the pair (ST, ST) is a subgame perfect Nash equilibrium for some range of val- ues of 8.An incumbent can commit to producing a large quantity of output before the potential rival decides whether to enter. The incumbent chooses whether to commit to produce a small quantity or a large quantity. The rival then decides whether to enter. Enter The payoffs are represented in the game treeillustrated in the figure to the right. What is the subgame perfect Nash equilibrium? (1,800,500) Rival Small O A. The Nash equilibrium is for the incumbent to produce the large quantity and for the rival to not enter regardless of the incumbent's quantity. (3,600,0) Don't enter O B. The Nash equilibrium is for the incumbent to produce the large quantity and for Incumbent the rival to enter regardless of the incumbent's quantity. OC. The game does not have a Nash equilibrium. O D. The Nash equilibrium is for the incumbent produce the small quantity and for Enter (1,600, - 80) Large Rival the rival to only enter if the incumbent produces the small quantity. (3,200,0) Don't enter O E. The Nash…
- 2- Consider the following game. Player 2 Player 1 U 12, 2 | 3, 9 5, 8 4, 2 D (a) Find all the Nash equilibria, pure and mixed. (b) Suppose that the payoff of the column player u:(D, L) is reduced from 8 to 6, but all other payoffs remain the same. Again, find all the pure- and mixed-strategy Nash equilibria. (c) Compare the mixed-strategy equilibria in parts (a) and (b). Did this worsening in one of player 2's payoffs change player 2's equilibrium mixed strategy? Did it change player l's? Give some intuition.Consider a game where each player picks a number from 0 to 60. The guess that is closest to half of the average of the chosen numbers wins a prize. If several people are equally close, then they share the prize. The game theory implies that (A) all players have dominant strategies to choose 0 (B) all players have dominant strategies to choose 30 (C) there is a Nash equilibrium where all players pick 0 (D) there is a Nash equilibrium where all players pick positive numbers Behavioral data in such games suggests that (A) most subjects choose 0; (B) most subjects choose 30;(C) common answers include 30, 15, 7.5, and 0; (D) most subjects use randomization.Consider the following sequential game: 1 O D,L U.L U,R U D,R D (0,2) 2 L What is the subgame perfect Nash equilibrium of this game? R. (-1,-1) (1,1)