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Please solve using EXCEL and show steps. In the Northwest Bank waiting line system, assume that...

Please solve using EXCEL and show steps.

In the Northwest Bank waiting line system, assume that the service times for drive-up teller follow an exponential probability distribution with a mean of 100 customers per hour. Use the exponential probability distribution to answer the following questions:

a. What is the probability that the service time is one minute or less?

b. What is the probability that the service time is two minutes or less?

c. What is the probability that the service time is more than two minutes?

d. What is the probability that the service time is between three and seven minutes?

Need to interpret the results for these problems; if you are unsure of the direction the question asks (left tail, right tail, etc.), draw a diagram.

Math   Statistics-And-Probability   
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