During the 3 pm to 5 pm time period, cars arrive at a bank's drive-through window...
During the 3 pm to 5 pm time period, cars arrive at a bank's drive-through window at an average rate of 15 customers per hour. Assume that the time between arrivals follows the exponential distribution. What is the average time between customer arrivals?
A.
30 minutes
B.
15 minutes
C.
4 minutes
D.
10 minutes
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During the 3 pm to 5 pm time period, cars arrive at a bank's
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I got e^(-5/4) for (a) and (b), but I do not know how to do (c).
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