SOLUTION: A committee for the end-of-year party is composed of four eighth graders and three seventh graders. A three-member subcommittee is formed... Find the probability that all 3 mem

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Question 143285: A committee for the end-of-year party is composed of four eighth graders and three seventh graders. A three-member subcommittee is formed...
Find the probability that all 3 members on the subcommittee are eighth graders?
Thanks for your help
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A committee for the end-of-year party is composed of four eighth graders and three seventh graders. A three-member subcommittee is formed...
Find the probability that all 3 members on the subcommittee are eighth graders?
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# of ways to pick 3 8th graders: 4C3 = 4
# of ways to pick 3 anything: 7C3 = 35
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P(3 are 8th) = 4C3/7C3 = 4/35 = 0.1143
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Cheers
Stan H.