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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Moselhi and Hassanein (2003) analyzed a 957-m stretch of a recently constructed two-lane highway. A borehole test for silt was conducted. The goal of the study is to show that the variance in the thickness is less than 0.05 m. The data are

a. Test this criterion about the variability using a 0.10 significance level.
b. Construct a 90% confidence interval for the true variance of the thickness.
c. What did you assume to do the analyses? Can you evaluate how well these data meet the assumptions? If yes, determine how comfortable you are with them. If not, explain why.
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