What is the variance of the number of calls per hour

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Reference no: EM13214145

Poisson Distribution (8 pts.) 911phone calls arrive at the rate of 30 per hour at the local call center.

a. Find the probability of receiving more than two calls in a five-minute interval of time.

b. Find the probability that the number of calls is between 5 and 10 (inclusive) in 15 minutes.

c. What is the variance of the number of calls per hour?

Reference no: EM13214145

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