Cars arrive at a toll booth according to a Poisson process with mean 50 cars per hour. Suppose the attendant makes a phone call. How long, in seconds, can the attendant's phone call last if the probability is at least 0.8 that no cars arrive during the call? (Round your answer to the nearest integer.)

Cars arrive at a toll booth according to a Poisson process with mean 50 cars per hour. Suppose the attendant makes a phone call. How long, in seconds, can the attendant's phone call last if the probability is at least 0.8 that no cars arrive during the call? (Round your answer to the nearest integer.)

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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