Fly-by-night Airlines and Going-going-gone Airways are considering whether to switch from their current standard fare schedule or implement a frequent-flyer program. The following figure summarizes the monthly profits in thousands of dollars from alternative pricing strategies.

a. Does this game have a Nash equilibrium?

b. What is the strategy profile for this game if both air carriers adopt a secure strategy? Is the resulting strategy profile a Nash equilibrium?

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Standard Going-going-gone Frequent flyer Standard (250, 275) (210,350) Fly-by-night Frequent flyer (325, 190) (200, 150 Payoffs: (Fly-by-night, Going-going-gone)