The last example in Section 11.6.6 described a study comparing EEG measures for murderers to a control group. The entire data set, containing measures taken at four sites in the brain, can be downloaded from the author’s web page as described in Chapter 1 and is stored in the file eegall.dat. The first two lines of this file described the data and need to be skipped when reading the data into R. Compare the two groups using the R function bwtrim. Verify that when comparing murderers to the control group, the p-value is 0.39.

Compare the results from the previous three exercises and comment on finding the optimal method for detecting a true difference among groups.

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