At an alcohol treatment center, about 10 people with alcohol problems complete treatment each month. The director wanted to know their status a year after treatment. In 2011 there were 112 people who completed treatment. In 2012 she hired a researcher to track down all 112 and assess their status one year after treatment. He managed to track 86 of the 112, or 77%. Of the 86, 66 agreed to be interviewed.66 is 77% of 96 and 59% of 112. Should the director pay attention to the results of the survey? Why or why not?