Dabbs and Morris (1990) examined archival data from military records to study the rela- tionship between high testosterone levels and antisocial behavior in males. Out of the 4,016 men in the normal testosterone group, 10.0% had a record of adult delinquency. Out of the 446 men in the high testosterone group, 22.6% had a record of adult delinquency.
(a) Create a contingency table of frequencies, classifying men by High and Normal testos- terone levels and by Delinquency and Nondelinquency.
(b) Compute x2 for this table.
(c) Draw the appropriate conclusions.