Answered: If a customer complains that the date…

If a customer complains that the date of arrival was not stamped on, what is the probability that it was inspected by Jessie?

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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Question

There are four QA inspectors in a packaging factory. Each one is supposed to stamp the date of arrival on each package at the end of the line. James, who stamps 20% of the packages, fails to stamp the expiration date once in every 200 packages; Jessie, who stamps 60% of the packages, fails to stamp the expiration date once in every 100 packages. Leah, who stamps 15% of the packages, fails to stamp the expiration date once in every 100 packages; and Andre, who stamps 5% of the packages, fails to stamp the expiration date once in every 200 packages. If a customer complains that the date of arrival was not stamped on, what is the probability that it was inspected by Jessie?

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