In a Survey of 1000 Adults 50 Year Old and Older

Multiple Choice

In a survey of 1000 adults 50 year old and older of whom 65% were retired and 35% were pre-retired, the following question was asked: Do you expect your income needs to vary from year to year in retirement? Of those who were retired, 35% answered no, 65% answered yes. Of those who were pre-retired, 35% answered no, and 65% answered yes. If a respondent in the survey was selected at random and had answerd yes to the question, what is the probability that he or she was retired? Round answer to three decimal places.

A) 0.642
B) 0.657
C) 0.634
D) 0.663
E) 0.650