What is the probability that a randomly selected adult uses social media? (b) What is the probability that a randomly selected adult is aged 18–29? (c) What is the probability that a randomly selected adult is 18–29 and a user of social media?

What is the probability that a randomly selected adult uses social media? (b) What is the probability that a randomly selected adult is aged 18–29? (c) What is the probability that a randomly selected adult is 18–29 and a user of social media?

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 marketing firm would like to test-market the name of a new energy drink targeted at 18- to 29-year-olds via social media. Suppose a study found that 37% of adults (18 and older) do not use social media. Suppose the percentage of adults age 30 and older is 71%. Suppose that the percentage of the adult population that is either age 18–29 or uses social media is 69.4%.

(a)

What is the probability that a randomly selected adult uses social media?

(b)

What is the probability that a randomly selected adult is aged 18–29?

(c)

What is the probability that a randomly selected adult is 18–29 and a user of social media?

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