Question

# A street noodle vendor in Singapore can service an average of 10 customers per hour. Given...

A street noodle vendor in Singapore can service an average of 10 customers per hour. Given an average arrival rate of 8 customers per hour, use the Poisson distribution to calculate the probability that the vendor can handle the demand.

What is the probability of having, at most, 10 customers arriving within 1 hour?

Please Look as i have taken value of e^-8 upto few decimal places thats why the answer comes out to be 0.8147 (as it was not mentioned in the question upto how much decimal places we have to calculate accurate answer).

NOTE : The answer is not incorrect, actually i have taken few decimal places and my answer is correct upto two decimal places. If we consider more accurate calculation involving more decimal places than it comes out to be 0.81588579255 which approximates well to the first option of 0.8159.

Thankyou

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