statistics

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5.20 There are 100 males and 120 females in the graduating
class of a local high school. Thirty-five percent of
the graduating males are on school sports teams, as are
30% of the graduating females. A local businessperson
is going to donate $1000 to the favorite charity of a
randomly selected graduate. What is the probability that
the graduate selected will be a male who is not a member
of a sports team? What is the probability that the
graduate will be either a female or a member of a sports
team?

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