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3. In a Gallup Poll of 1005 individuals, 452 thought they were worse off financially than a year ago. Find the 95% confidence interval for the true proportion of individuals who feel they are worse off financially

3. In a Gallup Poll of 1005 individuals, 452 thought they were worse off financially than a year ago. Find the 95% confidence interval for the true proportion of individuals who feel they are worse off financially

MATLAB: An Introduction with Applications
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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Answer 3 only. Dont use excel
ESTIMATING PROPORTION Answer the following: and that out of 200 workers, 168 send they more ti an hour by phone the 90% onfidence interval 1. A su were interrupted three messages, faxes, et of the on proportion of workers who are interrupted three or more times an hour. 2. The national average for the percentage of high school grates taking the SAT is 40, put the state averages vary from a lo to a high of 92%. A random sample of 300raduating school seniors was polled acro a particular tristate area and it was found that had taken the SAT. Estimate the true proportion of high school graduates in this region who take the SAT with 95% confidence 3. In a Gallup Poll of 1005 individuals, 452 thought they were worse off financially than a year ago. Find the 95% confidence interval for the true proportion of individuals who feel they are worse off financially
Transcribed Image Text:ESTIMATING PROPORTION Answer the following: and that out of 200 workers, 168 send they more ti an hour by phone the 90% onfidence interval 1. A su were interrupted three messages, faxes, et of the on proportion of workers who are interrupted three or more times an hour. 2. The national average for the percentage of high school grates taking the SAT is 40, put the state averages vary from a lo to a high of 92%. A random sample of 300raduating school seniors was polled acro a particular tristate area and it was found that had taken the SAT. Estimate the true proportion of high school graduates in this region who take the SAT with 95% confidence 3. In a Gallup Poll of 1005 individuals, 452 thought they were worse off financially than a year ago. Find the 95% confidence interval for the true proportion of individuals who feel they are worse off financially
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