The length of time for one patient to be treated in a clinic is a random...

The length of time for one patient to be treated in a clinic is a random variable having a mean of 7 patients per hour.

What is the probability the first patient arrives within 5 and 10 minutes after opening?
What is the probability that there NO patients in 20 minutes time.
What is the probability that there are at least 4 patients within 30 minutes?

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orchestra answered 1 year ago

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