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Merge and squash pull request #31164 from saasmath/master
Closes #31164 commit 1261cae Author: Gary Anderson <firstname.lastname@example.org> Date: Wed Oct 3 04:14:58 2012 -0700 Accept approximate decimal answers in computing means commit 08abd64 Merge: 87bc7c5 d1f63a4 Author: Gary Anderson <email@example.com> Date: Wed Oct 3 03:55:57 2012 -0700 Merge branch 'master' of https://github.com/Khan/khan-exercises commit 87bc7c5 Author: Gary Anderson <firstname.lastname@example.org> Date: Tue Oct 2 03:27:10 2012 -0700 Accept inexact answers for area computations using z-scores. In math and statistics courses, many students are taught to use graphing calculators or other technology, rather than tables, to compute areas under the normal curve. These will differ in the last digit frequently from the approximate z-tables, leading to incorrectly reported errors in the exercises. This fixes the issue by accepting the correctly rounded technology produced answer.
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