Blood cocaine concentration (mg/L) was determined both for a sample of individuals who had died from cocaine-induced excited delirium (ED) and for a sample of those who had 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 boxplot in the article "Fatal Excited Delirium Following Cocaine Use" (J. of Forensic Sciences, 1997: 25-31).

a. Determine the medians, fourths, and fourth spreads for the two samples.
b. Are there any outliers in either sample? Any extreme outliers?
c. Construct a comparative boxplot, and use it as a basis for comparing and contrasting the ED and non-ED samples.

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ED 3 4 5 .7 8 1.0 1.5 2.7 2.8 3.5 4.0 8.9 9.2 11.7 21.0 Non-ED 0 0 00 0 .1 .1.1.2 .2.2 3 3 .3 4 5 .5 6 8.9 1.0 1.2 14 1.5 1.7 2.0 3.2 3.5 4. 4.3 4.8 5.0 5.6 5.9 6.0 6.4 7.9 8.3 8.7 9.1 9.6 9.9 11.0 11.5 2.2 12.7 14.0 16.6 17.8