Refer to question 6. Suppose that service at the drive-in window is provided at a rate of 40 customers per hour and follows an exponential distribution.
a. What is the expected service time per customer?
b. Use equation to determine the probability that a customer€™s service time is one minute or less.

c. Compute the probabilities that the customer€™s service time is: between two and five minutes, less than four minutes, and more than threeminutes.

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