In a poll, 1200 adults in a region were asked about their online vs. in-store clothes shopping. One finding was that 42% of respondents never clothes-shop online. Find and interpret a 95% confidence interval for the proportion of all adults in the region who never clothes-shop online. Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. ..... The 95% confidence interval is from to (Round to three decimal places as needed.)
In a poll, 1200 adults in a region were asked about their online vs. in-store clothes shopping. One finding was that 42% of respondents never clothes-shop online. Find and interpret a 95% confidence interval for the proportion of all adults in the region who never clothes-shop online. Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. ..... The 95% confidence interval is from to (Round to three decimal places as needed.)
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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solve the following questions correctly, please.
Transcribed Image Text:In a poll, 1200 adults in a region were asked about their online vs. in-store clothes shopping. One finding was that 42% of respondents never clothes-shop online. Find and interpret a 95%
confidence interval for the proportion of all adults in the region who never clothes-shop online.
Click here to view page 1 of the table of areas under the standard normal curve.
Click here to view page 2 of the table of areas under the standard normal curve.
The 95% confidence interval is from
to
(Round to three decimal places as needed.)
Transcribed Image Text:A poll asked whether states should be allowed to conduct random drug tests on elected officials. Of 17,699 respondents, 81% said "yes."
a. Determine the margin of error for a 99% confidence interval.
b. Without doing any calculations, indicate whether the margin of error is larger or smaller for a 90% confidence interval. Explain your answer.
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