A random sample of 250 working adults found that 74% access the Internet at work, 88% access the Internet at home, and 72% access the Internet at both work and home. a) Find the probability that a person in this sample selected at random accesses the Internet at home or at work? b) Find the probability that a person in this sample selected at random accesses the Internet at home only? c) How many people in this sample do not access the Internet at work or at home?

A random sample of 250 working adults found that 74% access the Internet at work, 88% access the Internet at home, and 72% access the Internet at both work and home. a) Find the probability that a person in this sample selected at random accesses the Internet at home or at work? b) Find the probability that a person in this sample selected at random accesses the Internet at home only? c) How many people in this sample do not access the Internet at work or at home?

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

A random sample of 250 working adults found that 74% access the Internet at work, 88% access the Internet at home, and 72% access the Internet at both work and home.

a) Find the probability that a person in this sample selected at random accesses the Internet at home or at work?

b) Find the probability that a person in this sample selected at random accesses the Internet at home only?

c) How many people in this sample do not access the Internet at work or at home?

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