Does ginkgo biloba enhance memory? Repeat the analysis in Exercise 70, this time using a randomization test
Question:
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.
Step by Step Answer:
Intro Stats
ISBN: 9780134668420
5th Edition
Authors: Richard D De Veaux, Paul F Velleman, David E Bock, Nick Horton