Two bookstores are competing for customers. both bookstores can decide to offer discounts to attract more customers. bookstore-a has a 30% probability of offering a discount. the probability that bookstore-b will offer a discount is unknown, and is represented by p. the payoffs for the bookstores depending on whether discounts are offered are listed as follows. bookstore-a finds that the expected payoffs are the same whether the discount is offered or not. bookstore-b also realizes that its expected payoff is identical whether the discount is offered or not.
find payoff value x and probability level p.