Z score of mean
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Revision as of 14:13, 7 July 2011 by Chris Lawrence (talk | contribs)
Revision as of 14:13, 7 July 2011 by Chris Lawrence (talk | contribs)
<math>Z = \frac {\bar{y}-\mu_0}{\sigma_{y}}</math>, where <math>\mu_0 </math> is the test value.