A random sample of 100 invoices has been selected from a large file of company records. 12 invoiceswere found to be incorrect. The 95% confidence interval for the true percentage of invoices that areincorrect is:Select one:tiona. 13% sns 18.4%b. 5.6% Sns 18.4%C. 4.6% sns 18.4%d. 12% sns 18.4%

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Answered: A random sample of 100 invoices has…

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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A study of 420,048 cell phone users found that 137 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0256% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system. enter your response here%<p<enter your response here% (Round to three decimal places as needed.) b. Do cell phone users appear to have a rate of cancer of the brain or nervous system that is different from the rate of such cancer among those not using cell phones? Why or why not? A. No, because 0.0256% is included in the confidence interval. B. Yes, because 0.0256% is included in the confidence interval. C. Yes, because 0.0256% is not included in the confidence interval. D. No, because 0.0256% is not…
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A random sample of 100 invoices has been selected from a large file of company records. 12 invoices were found to be incorrect. The 95% confidence interval for the true percentage of invoices that are incorrect is: Select one: tion a. 13% sns18.4% b. 5.6% Sns18.4% C. 4.6% sns18.4% d. 12% sns 18.4%