Mathematics, 05.05.2020 05:38 hi105

The manager of a fast-food restaurant determines that the average time that her customers wait for service is 2 minutes. (a) Find the probability that a customer has to wait more than 4 minutes. (Round your answer to three decimal places.) (b) Find the probability that a customer is served within the first minute. (Round your answer to three decimal places.) (c) The manager wants to advertise that anybody who isn't served within a certain number of minutes gets a free hamburger. But she doesn't want to give away free hamburgers to more than 1% of her customers. What number of minutes should the advertisement use? (Round your answer to the nearest minute.)

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