Structural Analysis
Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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An automatic filling machine is used to fill Tide pods with liquid detergent. A random
sample of 20 Tide pods results in a sample variance of fill volume of s?= (0.0153)² (fluid ounce). If
the variance of the fill volume is too large, an unacceptable proportion of pods will be under- or
overfilled. If we assume that the fill volume is approximately normally distributed, calculate a 95%
confidence interval on the variance of the pod fill volume.
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Transcribed Image Text:An automatic filling machine is used to fill Tide pods with liquid detergent. A random sample of 20 Tide pods results in a sample variance of fill volume of s?= (0.0153)² (fluid ounce). If the variance of the fill volume is too large, an unacceptable proportion of pods will be under- or overfilled. If we assume that the fill volume is approximately normally distributed, calculate a 95% confidence interval on the variance of the pod fill volume.
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