SOLUTION: In a statistics class 45 of students,14 have volunteered for community service in the past. If two students are selected at random from this class, what is the probability that b

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Question 1117477: In a statistics class 45 of students,14 have volunteered for community service in the past. If two students are selected at random from this class, what is the probability that both of them have volunteered for community service?
p(both students have volunteered for community service)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
In a statistics class 45 of students,14 have volunteered for community service in the past. If two students are selected at random from this class, what is the probability that both of them have volunteered for community service?
p(both students have volunteered for community service)
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# of pairs who have volunteered:: 14C2 = 7(13) = 91
# of random pairs of students:: 45C2 = 45*22
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Ans:: 91/(45*22) = 0.092
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Cheers,
Stan H.
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