This document details a lesson on hypothesis testing, specifically focusing on comparing proportions through a six sigma framework. It explains the importance of resolving root causes through hypothesis testing, outlines a four-step process for conducting tests, and provides examples of using two-proportion tests in practical scenarios such as call centers and billing quality. Additionally, it emphasizes the need for statistical tests to validate proportions and includes guidance on how to perform these tests using software tools like Minitab and Excel.
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