The yearly rates of traffic accidents and violations were studied for a group of 137 young adult males who volunteered for treatment for substance abuse. For the five years before receiving treatment, their mean accident rate was 0.123 with a standard deviation of 0.167 (based on data from "Does Treatment for Substance Abuse Improve Driving Safety? A Preliminary Evaluation," by Mann et al., Addiction Research Foundation). At the 0.01 significance level, test the claim that the sample was drawn from the general driving population with a mean accident rate of 0.075. Do the results suggest that the Ministry of Transportation should take an interest in substance-abuse programs?