It is estimated that nearly half of all users of the social networking platform TikTok in the United States were between the ages of 10 and 29 in 2020 (Statista.com website). Suppose that the results below were received from a survey sent to a random sample of people in the United States regarding their use of TikTok.

a. Use the sample data above to compute the probability that a respondent to this survey uses TikTok.

b. What is the probability of a respondent to this survey in each age range (10–19, 20–29, 30–39, 401) using TikTok? Which age range has the highest probability of a respondent being a user of TikTok?

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Age Range of Respondent Uses TikTok 10-19 36 20-29 87 Does Not Use TikTok 44 52 30-39 42 89 40+ 44 138 Total: 209 323