Blood cocaine concentration (mg/L) was determined bothfor a sample of individuals who

Chapter 1, Problem 59

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Blood cocaine concentration (mg/L) was determined bothfor a sample of individuals who had died from cocaineinducedexcited delirium (ED) and for a sample of those whohad died from a cocaine overdose without excited delirium;survival time for people in both groups was at most 6 hours.The accompanying data was read from a comparative boxplotin the article Fatal Excited Delirium FollowingCocaine Use (J. of Forensic Sciences, 1997: 2531).ED 0 0 0 0 .1 .1 .1 .1 .2 .2 .3 .3.3 .4 .5 .7 .8 1.0 1.5 2.7 2.83.5 4.0 8.9 9.2 11.7 21.0Non-ED 0 0 0 0 0 .1 .1 .1 .1 .2 .2 .2.3 .3 .3 .4 .5 .5 .6 .8 .9 1.01.2 1.4 1.5 1.7 2.0 3.2 3.5 4.14.3 4.8 5.0 5.6 5.9 6.0 6.4 7.98.3 8.7 9.1 9.6 9.9 11.0 11.512.2 12.7 14.0 16.6 17.8 a. Determine the medians, fourths, and fourth spreads forthe two samples.b. Are there any outliers in either sample? Any extremeoutliers?c. Construct a comparative boxplot, and use it as a basisfor comparing and contrasting the ED and non-EDsamples.

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