Answered: The Pew Research Center conducts an…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

The Pew Research Center conducts an annual Internet Project, which includes research related to social networking. The provided two‑way table about the percentage of U.S. adults surveyed who use at least one social media site, broken down by age, is based on data reported by Pew as of February 2019.

Use Social Media	Yes	No	Total
Age 18-29 Age 18-29	212212	2424	236236
Age 30-49 Age 30-49	324324	7171	395395
Age 50-64 Age 50-64	293293	131131	424424
Age 65+ Age 65+	156156	235235	391391

To access the complete data set, click the link for your preferred software format.

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Regard the Internet Project survey as approximately an SRS of Americans over the age of 18.of 18.

The data came from the Pew Social Networking Fact Sheet, obtained at www.pewresearch.org/internet/fact-sheet/social-media.

Give a 99%99% confidence interval for the proportion of Americans over the age of 1818 who use at least one social media site. Give your answer in the form of (lower bound, upper bound). Give the bounds to four decimal places.

confidence interval:

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