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April 18, 2014

Homework Help: statistics

Posted by shasha on Friday, December 16, 2011 at 11:08am.

A study is discussed the purity of oxygen from a certain supplier. Assume that the mean was 99.61 with a standard deviation of 0.08. Assume that the distribution of purity was normal. Below what purity value would you expect to represent the smallest 25% of the population?

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