Question

Which of the following gives the probability that a project team contains exactly 2 chemists? A. $1 - \frac{C(3,3)C(12,3)}{C(15,6)}$ B. $\frac{C(3,2)C(12,4)}{C(15,6)}$ C. $1 - \frac{C(3,2)C(12,4)}{C(15,6)}$ D. $\frac{C(6,2)C(9,4)}{C(15,6)}$ 

          Which of the following gives the probability that a project team contains exactly 2
chemists?
A. $1 - \frac{C(3,3)C(12,3)}{C(15,6)}$
B. $\frac{C(3,2)C(12,4)}{C(15,6)}$
C. $1 - \frac{C(3,2)C(12,4)}{C(15,6)}$
D. $\frac{C(6,2)C(9,4)}{C(15,6)}$
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Which of the following gives the probability that a project team contains exactly 2 chemists? A. 1 - (C(3,3)C(12,3))/(C(15,6)) B. (C(3,2)C(12,4))/(C(15,6)) C. 1 - (C(3,2)C(12,4))/(C(15,6)) D. (C(6,2)C(9,4))/(C(15,6))

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Chemistry: Structure and Properties
Chemistry: Structure and Properties
Nivaldo Tro 2nd Edition
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Finite: I have 40 minutes to complete, please hurry. Which of the following gives the probability that a project team contains exactly 3 chemists? A. C(3,3) * C(12,3) / C(15,6) B. C(3,2) * C(12,4) / C(15,6) C. C(3,2) * C(12,4) / C(15,6) D. C(6,2) * C(9,4) / (9^11)
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Transcript

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00:01 A probability has to be between 0 and 1, inclusive, so it can be 0, it can be 1, it cannot be negative.
00:11 So for a, we have 1 .3, that's above 1.
00:16 It cannot be above 1, so this is not a valid probability...
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