Question: RETIREMENT NEEDS In a survey of 2000 adults 50 yr and older of whom 60% were retired and 40% were preretired, the following question was asked: Do you expect your income needs to vary from year to year in retirement? Of those who were retired, 33% answered no, and 67% answered yes. Of those who were pre-retired, 28% answered no, and 72% answered yes. If a respondent in the survey was selected at random and had answered yes to the question, what is the probability that he or she was retired?