(Answered) Question twelve individuals want to form a committee of

Statistics

Question: Twelve individuals want to form a committee of four.

(a) How many committees are possible?

(b) The 12 individuals consist of 5 biologists, 4 chemists, and 3 physicists. How many committees consisting of 2 biologists, 1 chemist, and 1 physicist are possible?

(c) In the setting of part (b), if all committees are equally likely, what is the probability the committee formed will consist of 2 biologists, 1 chemist, and 1 physicist?

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