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Customers arrive at a grocery store at an average of 2.2 per minute. Assume that the...

Customers arrive at a grocery store at an average of 2.2 per minute. Assume that the number of arrivals in a minute follows the Poisson distribution. Provide answers to the following to 3 decimal places.

What is the probability that at least seven customers arrive in three minutes, given that exactly two arrive in the first minute?

Math   Statistics-And-Probability   
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