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| Teaching Since: | May 2017 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Carbon fibers are usually subjected to an oxidative surface treatment that leads to an improvement in the interface strength when they are incorporated into a polymer mix. Baillie and Bader (1994) investigated the strength of single fibers embedded in resin using fragmentation tests. Ideally, the fragment strengths should have a variance of 1 GPa. Consider the following sample:
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a. Test this criterion about the variability using a 0.01 significance level.
b. Construct a 99% confidence interval for the true variance of the fragment strengths.
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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