# Question

A university bookstore claims that 50% of its customers are satisfied with the service and prices.

a. If this claim is true, what is the probability that in a random sample of 600 customers less than 45% are satisfied?

b. Suppose that in a random sample of 600 customers, 270 express satisfaction with the bookstore. What does this tell you about the bookstore’s claim?

a. If this claim is true, what is the probability that in a random sample of 600 customers less than 45% are satisfied?

b. Suppose that in a random sample of 600 customers, 270 express satisfaction with the bookstore. What does this tell you about the bookstore’s claim?

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