Answered: What is the probability that a randomly…

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Probability

What is the probability that a randomly selected person will not use either social media platform?

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

A recent survey examined the use of social media platforms. Suppose the survey found that
there is a 0.63 probability that a randomly selected person will use Facebook and
a 0.28 probability that a randomly selected person will use LinkedIn. In addition, suppose there
is a 0.18 probability that a randomly selected person will use both Facebook and LinkedIn.
What is the probability that a randomly selected person will not use either social media
platform?
Your answer should be expressed as a number between 0 and 1, and it has to contain 2
decimal places

Expert Solution

Step 1

A recent survey examined the use of social media platforms. Suppose the survey found that there is a 0.63 probability that a randomly selected person will use Facebook and a 0.28 probability that a randomly selected person will use LinkedIn. In addition, suppose there is a 0.18 probability that a randomly selected person will use both Facebook and LinkedIn.

Here define events

F = person use a Facebook

L = person use linkedin

P(F) = 0.63

P(L) = 0.28

P(F and L) = 0.18

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