(a) The arrival times of workers at a factory first-aid room satisfy a Poisson process with an average of 2 per hour. (i) What is the probability that there is at least 1 hour between two arrivals at the first-aid room? (ii) What is the probability that at least 3 workers visit the first-aid room during a 2-hour period? (b) The resistance in milliohms of 1 meter of copper cable at a certain temperature is normally distributed with mean = 23.8 and variance 1.28. Find the 95% confidence interval and lower quartile. %3D %3D

(a) The arrival times of workers at a factory first-aid room satisfy a Poisson process with an average of 2 per hour. (i) What is the probability that there is at least 1 hour between two arrivals at the first-aid room? (ii) What is the probability that at least 3 workers visit the first-aid room during a 2-hour period? (b) The resistance in milliohms of 1 meter of copper cable at a certain temperature is normally distributed with mean = 23.8 and variance 1.28. Find the 95% confidence interval and lower quartile. %3D %3D

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Description: 2. (a) The arrival times of workers at a factory first-aid room satisfy a Poisson processwith an average of 2 per hour. (i) What is the probability that there is at least 1 hourbetween two arrivals at the first-aid room? (ii) What is the probability

A First Course in Probability (10th Edition)

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Author:Sheldon Ross

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Chapter1: Combinatorial Analysis

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Question

2. (a) The arrival times of workers at a factory first-aid room satisfy a Poisson process
with an average of 2 per hour. (i) What is the probability that there is at least 1 hour
between two arrivals at the first-aid room? (ii) What is the probability that at least 3
workers visit the first-aid room during a 2-hour period?
(b) The resistance in milliohms of 1 meter of copper cable at a certain temperature is
normally distributed with mean = 23.8 and variance 1.28. Find the 95% confidence
interval and lower quartile.

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