4.8.4Calls arriving at a switchboard follow a Poisson process with parameter λ = 5.2 per minute. (a) What is the expected waiting time between the arrivals of two calls? (b) What is the probability that the waiting time between the arrivals of two calls is less than 10 seconds? (c) What is the distribution of the time taken for ten calls to arrive at the switchboard? (d) What is the expectation of the time taken for ten calls to arrive at the switchboard? (e) What is the probability that more than five calls arrive at the switchboard during a 1-minute period?

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.3: Conditional Probability; Independent Events; Bayes' Theorem
Problem 59E
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4.8.4Calls arriving at a switchboard follow a Poisson process with parameter λ = 5.2
per minute.
(a) What is the expected waiting time between the arrivals of two calls?
(b) What is the probability that the waiting time between the arrivals of two calls
is less than 10 seconds?
(c) What is the distribution of the time taken for ten calls to arrive at the
switchboard?
(d) What is the expectation of the time taken for ten calls to arrive at the
switchboard?
(e) What is the probability that more than five calls arrive at the switchboard
during a 1-minute period?
Transcribed Image Text:4.8.4Calls arriving at a switchboard follow a Poisson process with parameter λ = 5.2 per minute. (a) What is the expected waiting time between the arrivals of two calls? (b) What is the probability that the waiting time between the arrivals of two calls is less than 10 seconds? (c) What is the distribution of the time taken for ten calls to arrive at the switchboard? (d) What is the expectation of the time taken for ten calls to arrive at the switchboard? (e) What is the probability that more than five calls arrive at the switchboard during a 1-minute period?
Expert Solution
Step 1

Given

calls arriving at a switchboard follow a Poisson process with parameter λ = 5.2 per minute.

We know that .

       By the memorylessness property the time between consecutive events is a Poisson random variable with parameter λ

 

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