Twittering away The Pew Internet and American Life Project asked a random sample of 2253 U.S. adults, “Do you ever ….. use Twitter or another service to share updates about yourself or to see updates about others?" In the sample, 19% said “Yes." The dotplot shows the proportion who would say "Yes" to this question in each of 1000 random samples of size 2253 from a population where 19% would say "Yes.”18 allı 0.17 0.18 0.19 0.2 0.21 0.22 0.23 Simulated sample proportion who would say "Yes" 0.16 Distribution of simulated proportion # samples 1000 mean 0.19 SD 0.009 ) Use the results of the simulation to approximate the margin of error for the estimate of the proportion of U.S. adults who would say “Yes” to this question. Interpret the margin of error.
Twittering away The Pew Internet and American Life Project asked a random sample of 2253 U.S. adults, “Do you ever ….. use Twitter or another service to share updates about yourself or to see updates about others?" In the sample, 19% said “Yes." The dotplot shows the proportion who would say "Yes" to this question in each of 1000 random samples of size 2253 from a population where 19% would say "Yes.”18 allı 0.17 0.18 0.19 0.2 0.21 0.22 0.23 Simulated sample proportion who would say "Yes" 0.16 Distribution of simulated proportion # samples 1000 mean 0.19 SD 0.009 ) Use the results of the simulation to approximate the margin of error for the estimate of the proportion of U.S. adults who would say “Yes” to this question. Interpret the margin of error.
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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Transcribed Image Text:3.
Twittering away The Pew Internet and American Life Project asked a
random sample of 2253 U.S. adults, "Do you ever ... use Twitter or
another service to share updates about yourself or to see updates about
others?" In the sample, 19% said “Yes." The dotplot shows the proportion
who would say "Yes" to this question in each of 1000 random samples of
size 2253 from a population where 19% would say "Yes."18
||||
0.16 0.17
0.18
0.19
0.2 0.21 0.22 0.23
Simulated sample proportion who would say "Yes"
Distribution of simulated proportion
# samples
1000
mean
0.19
SD
0.009
(a) Use the results of the simulation to approximate the margin of error for the
estimate of the proportion of U.S. adults who would say "Yes" to this
question.
(b) Interpret the margin of error.
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