An article included data from a survey of 2587 hiring managers and human resource professionals. The article noted that many employers are using social networks to screen job applicants and that this practice is becoming more common. Of the 2587 people who participated in the survey, 1300 indicated that they use social networking sites (such as Facebook, MySpace, and LinkedIn) to research job applicants. For the purposes of this exercise, assume that the sample is representative of hiring managers and human resource professionals. Assuming that this sample is random/representative of the population, what other assumptions need to be true before we can create a confidence interval? b. human resource professionals who use social networking sites to research job applicants. (Round your answers to three decimal places.) Construct a 95% confidence interval for the proportion of hiring managers and Draw a conclusion about the 95% confidence interval for p, the proportion of all hiring managers and human resource professionals who use social networking sites to research job applicants d. Suppose that the researchers wanted to estimate the proportion of hiring managers and human resource professionals who screen job applicants using social networks. Determine the sample size required to estimate the proportion of employers using social networks to Screen job applicants to within .02 with 95% confidence. (Round your answer up to the nearest whole umber.) Hint: What formula do we use if the p estimate is unknown?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Part a,b,c and d
3:59 1
Today
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3:57 PM
An article included data from a survey of 2587 hiring managers and human resource professionals,
The article noted that many employers are using social networks to screen job applicants and
that this practice is becoming more common. Of the 2587 people who participated in the
survey, 1300 indicated that they use social networking sites (such as Facebook, MySpace, and
LinkedIn) to research job applicants. For the purposes of this exercise, assume that the sample
is representative of hiring managers and human resource professionals.
,Assuming that this sample is random/representative of the population, what other
assumptions need to be true
we can create a
confidence interval?
b.
Construct a 95% confidence interval for the proportion of hiring managers and
human resource professionals who use social networking sites to research job applicants.
(Round your answers to three decimal places.)
Draw a conclusion about the 95% confidence interval for p, the proportion of all
hiring managers and human resource professionals who use social networking sites to rescarch
job applicants
d.
Suppose that the researchers wanted to estimate the proportion of hiring managers
and human resource professionals who screen job applicants using social networks. Determine
the sample size required to estimate the proportion of employers using social networks to
screen job applicants to within .02 with 95% confidence. (Round your answer up to the
nearest whole number.)
Hint: What formula do we use if the p estimate is unknown?
EP
Transcribed Image Text:3:59 1 Today Edit 3:57 PM An article included data from a survey of 2587 hiring managers and human resource professionals, The article noted that many employers are using social networks to screen job applicants and that this practice is becoming more common. Of the 2587 people who participated in the survey, 1300 indicated that they use social networking sites (such as Facebook, MySpace, and LinkedIn) to research job applicants. For the purposes of this exercise, assume that the sample is representative of hiring managers and human resource professionals. ,Assuming that this sample is random/representative of the population, what other assumptions need to be true we can create a confidence interval? b. Construct a 95% confidence interval for the proportion of hiring managers and human resource professionals who use social networking sites to research job applicants. (Round your answers to three decimal places.) Draw a conclusion about the 95% confidence interval for p, the proportion of all hiring managers and human resource professionals who use social networking sites to rescarch job applicants d. Suppose that the researchers wanted to estimate the proportion of hiring managers and human resource professionals who screen job applicants using social networks. Determine the sample size required to estimate the proportion of employers using social networks to screen job applicants to within .02 with 95% confidence. (Round your answer up to the nearest whole number.) Hint: What formula do we use if the p estimate is unknown? EP
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