The National Sporting Goods Association conducted a survey of
persons 7 years of age or older about participation in sports
activities (Statistical Abstract of the United States: 2002). The
total population in this age group was reported at 248.5 million,
with 120.9 million male and 127.6 million female. The number of
participants for the top five sports activities appears here.
Participants (millions)
Activity Male
Female Bicycle riding
20.7 19.5
Camping 27.1
22.8 Exercise walking
27.2
56.2 Exercising with equipment
18.9 22.9
Swimming 24.9
35.9
For a randomly selected female, estimate the probability of
participation in each of the sports activities (to 2 decimals).
Note that the probabilities do not sum to 1 because of
participation in more than one sports activity. Bicycle riding
Camping Exercise walking Exercising with equipment Swimming For a
randomly selected male, estimate the probability of participation
in each of the sports activities (to 2 decimals). Note that the
probabilities do not sum to 1 because of participation in more than
one sports activity.
Bicycle riding Camping Exercise walking Exercising with equipment
Swimming For a randomly selected person, what is the probability
the person participates in exercise walking (to 2 decimals)?
Suppose you just happen to see an exercise walker going by. What is
the probability the walker is a woman (to 2 decimals)? What is the
probability the walker is a man (to 2 decimals)?
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