A coffee shop serves an average of 70 customers per hour during the morning Rush. Find the probability that less than 55 customers arrive in an hour during tomorrow's morning rush.
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Expert's answer
2020-03-02T13:54:14-0500
The arrival process follows a poisson distribution with mean 70. To calculate P(<55), poisson.dist function in Excel is used. The formula is =POISSON.DIST(54,70,TRUE), and the answer is 0.0282344.
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