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Get Full Access to Probability And Statistics For Engineers And The Scientists - 9 Edition - Chapter 2 - Problem 66e
Get Full Access to Probability And Statistics For Engineers And The Scientists - 9 Edition - Chapter 2 - Problem 66e

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Consider the following information about travelers on

ISBN: 9780321629111 32

Solution for problem 66E Chapter 2

Probability and Statistics for Engineers and the Scientists | 9th Edition

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Problem 66E

Consider the following information about travelers on vacation (based partly on a recent Travelocity poll): 40% check work email, 30% use a cell phone to stay connected to work, 25% bring a laptop with them, 23% both check work email and use a cell phone to stay connected, and 51% neither check work email nor use a cell phone to stay connected nor bring a laptop. In addition, 88 out of every 100 who bring a laptop also check work email, and 70 out of every 100 who use a cell phone to stay connected also bring a laptop. a. ?What is the probability that a randomly selected traveler who checks work email also uses a cell phone to stay connected? b. ?What is the probability that someone who brings a laptop on vacation also uses a cell phone to stay connected? c. ?If the randomly selected traveler checked work email and brought a laptop, what is the probability that he/she uses a cell phone to stay connected?

Step-by-Step Solution:

Solution : Step 1: From the given data 40% of travelers check work email, 30% use a cell phone to stay connected to work, 25% bring a laptop with them, 23% both check work email and use a cell phone to stay connected, and 51% neither check work email nor use a cell phone to stay connected nor bring a laptop. It is also given that 88 out of every 100 who bring a laptop also check work email, and 70 out of every 100 who use a cell phone to stay connected also bring a laptop.

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