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Based on a random sample of 50, a 95% confidence interval for the population proportion was computed. Holding everything else constant, which of the following will reduce the length of the confidence interval by half? (CHECK ALL THAT APPLY): A. Decrease the sample proportion by half. B. Double the sample size. C. Change the confidence level to 99.7%. D. Change the confidence level to 68 %. E. Quadruple the sample size.

Based on a random sample of 50, a 95% confidence interval for the population proportion was computed. Holding everything else constant, which of the following will reduce the length of the confidence interval by half? (CHECK ALL THAT APPLY): A. Decrease the sample proportion by half. B. Double the sample size. C. Change the confidence level to 99.7%. D. Change the confidence level to 68 %. E. Quadruple the 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
Problem 1P
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Based on a random sample of 50, a 95% confidence interval for the population proportion was computed. Holding everything else constant, which of the following will reduce the length of the confidence interval by half? (CHECK ALL THAT APPLY): A. Decrease the sample proportion by half. B. Double the sample size. C. Change the confidence level to 99.7%. D. Change the confidence level to 68 %. E. Quadruple the sample size.
Transcribed Image Text:Based on a random sample of 50, a 95% confidence interval for the population proportion was computed. Holding everything else constant, which of the following will reduce the length of the confidence interval by half? (CHECK ALL THAT APPLY): A. Decrease the sample proportion by half. B. Double the sample size. C. Change the confidence level to 99.7%. D. Change the confidence level to 68 %. E. Quadruple the sample size.
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