Two Sample Procedures     
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.. toctree::
   :maxdepth: 1

   lectures/11-1-ci-ht-two-samples
   lectures/11-2-comparing-two-means-independent-sigmas-known
   lectures/11-3-comparing-two-means-independent-pooled
   lectures/11-4-comparing-two-means-independent-unpooled
   lectures/11-5-mean-of-paired-differences-two-dependent-populations