47. 911 Calls. Emergency 911 calls to a small municipality in Idaho come in at the rate of one every 2 minutes. a. What is the expected number of 911 calls in one hour? b. What is the probability of three 911 calls in five minutes? c. What is the probability of no 911 calls in a five­minute period?

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter14: Counting And Probability
Section14.CR: Chapter Review
Problem 5CC: a What is meant by an experiment? Sample space? b What is an event? c Define the probability of an...
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47. 911 Calls. Emergency 911 calls to a small municipality in Idaho come in at the rate of one every 2 minutes.

a. What is the expected number of 911 calls in one hour?

b. What is the probability of three 911 calls in five minutes?

c. What is the probability of no 911 calls in a five­minute period?

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