The city of Fairview runs a swim league for teens aged 13 to 17. Suppose a swimmer from the league is randomly selected. Let X be the age (in years) of the selected swimmer. Here is the probability distribution of X. Value x of X 13 14 15 16 (a) Older than 15: (b) 14 or younger: 0 17 0.28 0.21 0.18 0.18 0.15 P(X=x) For parts (a) and (b) below, find the probability that the randomly selected swimmer has the age described. X S

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