The percentage of adult users on the internet who use facebook has increased over time. Of adult internet users age 18-49, 81% use facebook. Of adult internet users age 50 and older, 54% use facebook. Assume that 52% of adult internet users are age 18-49.a. What is the probability that a randomly selected adult user of the internet is age 50 or older?b. Given that an adult Internet user uses Facebook, what is the probability that he/she is age 18-49?
