At a specified point on a highway, vehicles are known to arrive according to a Poisson process. Vehicles are counted in 20-second intervals, and vehicle counts are taken in 120 of these time intervals. It is noted that no cars arrive in 18 of these 120 intervals. Approximate the number of these 120 intervals in which exactly three cars arrive.
At a specified point on a highway, vehicles are known to arrive according to a Poisson process. Vehicles are counted in 20-second intervals, and vehicle counts are taken in 120 of these time intervals. It is noted that no cars arrive in 18 of these 120 intervals. Approximate the number of these 120 intervals in which exactly three cars arrive.
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter4: Traffic Engineering Studies
Section: Chapter Questions
Problem 7P
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![At a specified point on a highway, vehicles are known to arrive according to a Poisson process. Vehicles are
counted in 20-second intervals, and vehicle counts are taken in 120 of these time intervals. It is noted that no cars
arrive in 18 of these 120 intervals. Approximate the number of these 120 intervals in which exactly three cars
arrive.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3e731ea5-6fbb-485f-88b2-6099d5b38310%2F8fe7e9f7-e3dc-4ad5-b0bb-836130c73e9c%2Fx3h8by_processed.png&w=3840&q=75)
Transcribed Image Text:At a specified point on a highway, vehicles are known to arrive according to a Poisson process. Vehicles are
counted in 20-second intervals, and vehicle counts are taken in 120 of these time intervals. It is noted that no cars
arrive in 18 of these 120 intervals. Approximate the number of these 120 intervals in which exactly three cars
arrive.
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