Math

Probability

The percentage of adult users of the Internet who use Facebook has increased over time (Pew Research Internet Project, 2013). Of adult Internet

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

The percentage of adult users of the Internet who use Facebook has increased over time (Pew Research Internet Project, 2013). Of adult Internet users age 18-49, 81% use Facebook. Of adult Internet users age 50 and older, 54% use Facebook. Assume that 52% of adult Internet users are age 18-49. The probability that a randomly selected adult user of the Internet is age 50 or older is equal to . Given that an adult Internet user uses Facebook, the probability that he/she is age 18-49 is .

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