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A total of 9 cycles have been observed during a direct time study. The mean for the largest element time = 1.30 min, and the corresponding sample standard deviation s = 0.20 min. (a) Based on these data, what is the 95% confidence interval on the 1.30 min element time? Lower bound = 1.15 Upper bound = 1.45 (b) If the analyst wants to be 98% confident that the mean of the sample was within +5% of the true mean, how many more observations should be taken? Number of additional required observation = 71

A total of 9 cycles have been observed during a direct time study. The mean for the largest element time = 1.30 min, and the corresponding sample standard deviation s = 0.20 min. (a) Based on these data, what is the 95% confidence interval on the 1.30 min element time? Lower bound = 1.15 Upper bound = 1.45 (b) If the analyst wants to be 98% confident that the mean of the sample was within +5% of the true mean, how many more observations should be taken? Number of additional required observation = 71

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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A total of 9 cycles have been observed during a direct time study. The mean for the largest element time = 1.30 min, and the corresponding sample standard deviation s = 0.20 min. (a) Based on these data, what is the 95% confidence interval on the 1.30 min element time? Lower bound = 1.15 Upper bound = 1.45 (b) If the analyst wants to be 98% confident that the mean of the sample was within +5% of the true mean, how many more observations should be taken? Number of additional required observation = 71
Transcribed Image Text:A total of 9 cycles have been observed during a direct time study. The mean for the largest element time = 1.30 min, and the corresponding sample standard deviation s = 0.20 min. (a) Based on these data, what is the 95% confidence interval on the 1.30 min element time? Lower bound = 1.15 Upper bound = 1.45 (b) If the analyst wants to be 98% confident that the mean of the sample was within +5% of the true mean, how many more observations should be taken? Number of additional required observation = 71
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