Social Media Harris Interactive conducted a survey in which they asked adult Americans (18 years or older) whether they used social media (Facebook, Twitter, and so on) regularly. The following table is based on the results of the survey. 18-34 35-44 45-54 55+ Total Use social media 117 89 83 49 338 Do not use 33 36 57 66 192 social media Total 150 125 140 115 530 Source: Harris Interactive (a) If an adult American is randomly selected, what is the probability he or she uses social media? (b) If an adult American is randomly selected, what is the probability he or she is 45 to 54 years of age? (c) If an adult American is randomly selected, what is the probability he or she is a 35- to 44-year-old social media user? (d) If an adult American is randomly selected, what is the probability he or she is 35 to 44 years old or uses social media