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. 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 impression? b) Construct a 99% confidence interval estimate of the proportion of all human resource professionals believing that the appearance of a job applicant is most important for a good first impression. c) Repeat part b using a confidence level of 80% d) Compare the confidence intervals from parts b and c and identify the interval that is wider. Why is it wider? PLEASE SHOW ALL WORK!!!
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.
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 impression?
b) Construct a 99% confidence
c) Repeat part b using a confidence level of 80%
d) Compare the confidence intervals from parts b and c and identify the interval that is wider. Why is it wider?
PLEASE SHOW ALL WORK!!!
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