I do an example of setting up a Matched Pairs Mean t-Confidence Interval. The sixth student's score was mis-copied and should be a 95 instead of a 92. Sorry for the small copy error.
There is an annotation for the Normality check. Normality: With the difference being fairly symmetric & unimodal, the Central Limit Theorem should ensure the sampling distribution of mean differences will be approximately Normal with n=10. Find free review test, useful notes and more at http://www.mathplane.com
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