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(c) Show all steps to construct a 99% confidence interval estimate of the proportion of all human resource professional believing that the appearance of a job applicant is most important for a good first impression. Check your solution using Excel and post a screenshot on Crowdmark. (d) Construct an 80% confidence interval estimate of the proportion of all human resource professional believing that the appearance of a job applicant is most important for a good first impression. Check your solution using Excel and post a screenshot on Crowdmark. (e) As the level of confidence decreases what happens to the width of the confidence interval? (f) If the level of confidence stays constant and the sample size increases what happens to the width of the confidence interval?

(c) Show all steps to construct a 99% confidence interval estimate of the proportion of all human resource professional believing that the appearance of a job applicant is most important for a good first impression. Check your solution using Excel and post a screenshot on Crowdmark. (d) Construct an 80% confidence interval estimate of the proportion of all human resource professional believing that the appearance of a job applicant is most important for a good first impression. Check your solution using Excel and post a screenshot on Crowdmark. (e) As the level of confidence decreases what happens to the width of the confidence interval? (f) If the level of confidence stays constant and the sample size increases what happens to the width of the confidence interval?

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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(c) Show all steps to construct a 99% confidence interval estimate of the proportion of all human resource professional believing that the appearance of a job applicant is most important for a good first impression. Check your solution using Excel and post a screenshot on Crowdmark. (d) Construct an 80% confidence interval estimate of the proportion of all human resource professional believing that the appearance of a job applicant is most important for a good first impression. Check your solution using Excel and post a screenshot on Crowdmark. (e) As the level of confidence decreases what happens to the width of the confidence interval? (f) If the level of confidence stays constant and the sample size increases what happens to the width of the confidence interval?
Transcribed Image Text:(c) Show all steps to construct a 99% confidence interval estimate of the proportion of all human resource professional believing that the appearance of a job applicant is most important for a good first impression. Check your solution using Excel and post a screenshot on Crowdmark. (d) Construct an 80% confidence interval estimate of the proportion of all human resource professional believing that the appearance of a job applicant is most important for a good first impression. Check your solution using Excel and post a screenshot on Crowdmark. (e) As the level of confidence decreases what happens to the width of the confidence interval? (f) If the level of confidence stays constant and the sample size increases what happens to the width of the confidence interval?
3. In a Harris poll of 514 human resource professionals, 90% said that the appearance of a job applicant is most important for a good first impression. Answer the following questions by hand and post your solutions on Crowdmark. (a) Among the 514 human resource professionals who were surveyed, how many of them said that the appearance of a job applicant is most important for a good first impres- sion? (b) Verify that both np > 5 and nĝ > 5.
Transcribed Image Text:3. In a Harris poll of 514 human resource professionals, 90% said that the appearance of a job applicant is most important for a good first impression. Answer the following questions by hand and post your solutions on Crowdmark. (a) Among the 514 human resource professionals who were surveyed, how many of them said that the appearance of a job applicant is most important for a good first impres- sion? (b) Verify that both np > 5 and nĝ > 5.
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