Refer to the payoffs in the table above. Sears and Wal-Mart must decide whether to lower their prices based on the profits shown in the table. This game has
A) no Nash equilibrium.
B) a Nash equilibrium: Sears keeps its prices high and Wal-Mart lowers its prices.
C) a Nash equilibrium: both Sears and Wal-Mart keep prices high.
D) a Nash equilibrium: both Sears and Wal-Mart lower prices.
D
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Each member of OPEC can increase its income by selling more oil than its output quota because
A) the demand for oil is perfectly elastic. B) by selling more at OPEC's cartel price, a member will automatically earn more income. C) each member's demand is more elastic than the total demand for oil. D) the demand for oil is inelastic so total revenue increases.
Which of the following is true for a monopolist that does not price discriminate?
a. P > MR because some revenue is lost from having to lower the price on all units sold b. P < MR because the monopolist must lower price to sell more output c. P = MR only at the profit-maximizing level of output d. P = MR because there are no close substitutes for the good e. P = MR because the firm faces a perfectly elastic demand curve