The Cashier Service Time at the Local Branch of the Rivertown

question 139

Multiple Choice

The cashier service time at the local branch of the Rivertown bank has an exponential distribution with a mean of 2.5 minutes. What is the probability that the service time is between 2 and 4 minutes?

• A) .2488
• B) .4493
• C) .2019
• D) .2474
• E) .1170

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