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Waiting times to receive food after placing an order at the local Subway sandwich shop follow an exponential distribution with a mean of 72

Waiting times to receive food after placing an order at the local Subway sandwich shop follow an exponential distribution with a mean of 72 seconds. Calculate the probability a customer waits: a. Less than 28 seconds. (Round your answer to 4 decimal places.) b. More than 136 seconds. (Round your answer to 4 decimal places.) c. Between 35 and 82 seconds. (Round your answer to 4 decimal places.)

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