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4. The wall thickness of n glass of 2-liter bottles was measured by a quality-control engineer and he found that the mean is 4.058 mm with standard deviation of 0.081 mm. i. What sample size is necessary to obtain a 95% confidence interval on the average wall thickness, which ranges from 4.0246 and 4.0914? (Hint: n > 30). il. Hence, construct a 98% confidence interval on the variability of the wall thickness.

4. The wall thickness of n glass of 2-liter bottles was measured by a quality-control engineer and he found that the mean is 4.058 mm with standard deviation of 0.081 mm. i. What sample size is necessary to obtain a 95% confidence interval on the average wall thickness, which ranges from 4.0246 and 4.0914? (Hint: n > 30). il. Hence, construct a 98% confidence interval on the variability of the wall thickness.

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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4. The wall thickness of n glass of 2-liter bottles was measured by a quality-control engineer and he found that the mean is 4.058 mm with standard deviation of 0.081 mm. i. What sample size is necessary to obtain a 95% confidence interval on the average wall thickness, which ranges from 4.0246 and 4.0914? (Hint: n > 30). ii. Hence, construct a 98% confidence interval on the variability of the wall thickness. Solution SV
Transcribed Image Text:4. The wall thickness of n glass of 2-liter bottles was measured by a quality-control engineer and he found that the mean is 4.058 mm with standard deviation of 0.081 mm. i. What sample size is necessary to obtain a 95% confidence interval on the average wall thickness, which ranges from 4.0246 and 4.0914? (Hint: n > 30). ii. Hence, construct a 98% confidence interval on the variability of the wall thickness. Solution SV
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