Question

During lunch hour, customers arrive at a fast food drive through window, on average, every 2.5 minutes. Assume arrival time follows the exponential probability distribution.
a. What is the probability that the next customer will arrive
1. within the next 2 minutes?
2. in more than 5 minutes?
3. between 1 and 4 minutes?
b. Confirm the answers to part a using Excel.


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  • CreatedJuly 17, 2015
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