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A study conducted several years ago reported that 21 percent of public accountants changed companies within 4 years. The Americar Institute of CPAS would like to update the study. They would like to estimate the population proportion of public accountants who changed companies within 4 years with a margin of error of 4% and a 90% level of confidence. (Round your z value to 2 decimals. Round up your answers to the next whole number.) a. To update this study, the files of how many public accountants should be studied? Sample size b. How many public accountants should be contacted if no previous estimates of the population proportion are available? Sample size

A study conducted several years ago reported that 21 percent of public accountants changed companies within 4 years. The Americar Institute of CPAS would like to update the study. They would like to estimate the population proportion of public accountants who changed companies within 4 years with a margin of error of 4% and a 90% level of confidence. (Round your z value to 2 decimals. Round up your answers to the next whole number.) a. To update this study, the files of how many public accountants should be studied? Sample size b. How many public accountants should be contacted if no previous estimates of the population proportion are available? Sample size

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
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15 Sample size Exercise 9-63 (Algo) (LO9-4) A study conducted several years ago reported that 21 percent of public accountants changed companies within 4 years. The American Institute of CPAS would like to update the study. They would like to estimate the population proportion of public accountants who changed companies within 4 years with a margin of error of 4% and a 90% level of confidence. (Round your z value to 2 decimals. Round up your answers to the next whole number.) a. To update this study, the files of how many public accountants should be studied? b. How many public accountants should be contacted if no previous estimates of the population proportion are available? Sub Sample size Check my work
Transcribed Image Text:15 Sample size Exercise 9-63 (Algo) (LO9-4) A study conducted several years ago reported that 21 percent of public accountants changed companies within 4 years. The American Institute of CPAS would like to update the study. They would like to estimate the population proportion of public accountants who changed companies within 4 years with a margin of error of 4% and a 90% level of confidence. (Round your z value to 2 decimals. Round up your answers to the next whole number.) a. To update this study, the files of how many public accountants should be studied? b. How many public accountants should be contacted if no previous estimates of the population proportion are available? Sub Sample size Check my work
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