How to Cite "Two-Sample z-test for Comparing Two Means" from CliffsNotes.com:

CliffsNotes.com. Two-Sample z-test for Comparing Two Means. 25 Oct 2014
<http://www.cliffsnotes.com/math/statistics/univariate-inferential-tests/two-sample-z-test-for-comparing-two-means>.



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