A survey by the Center for the Digital Future of the University of Southern . \"Older E-mail Users Favor Fast Replies,\" reported that 70.7% of users over 70 years of age believe that email messages should be answered quickly, as compared to 53.6% of users 12 to 50 years old. Suppose that the survey was based on 1,000 users over 70 years of age and 1,000 users 12 to 50 years old. The following table summarizes the results. Suppose you know that the respondent is over 70 years old. What is the probability that he or she answers quickly? (2 points) * Y. 515 m 1.243 No 454 293 757 Total 1.000 1.000 2.000 O 0.535 O 0.707 O 0.522