Does ginkgo biloba enhance memory? Repeat the analysis in Exercise 70, this time using a randomization test

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Does ginkgo biloba enhance memory? Repeat the analysis in Exercise 70, this time using a randomization test to see if the difference in mean number of items recalled is statistically significant. Be sure to include a P-value.


Data From Exercise 70

Does ginkgo biloba enhance memory? In an experiment  to find out, subjects were assigned randomly to take ginkgo biloba supplements or a placebo. Their memory was  tested to see whether it improved. The numbers reported are the  number of items recalled before and after taking a supplement.  Here are boxplots comparing the two groups. At the top of the  next page is some computer output from a two-sample t-test  computed for the data.

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Intro Stats

ISBN: 9780134668420

5th Edition

Authors: Richard D De Veaux, Paul F Velleman, David E Bock, Nick Horton

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