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Standard Deviation of X 2

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A committee of 3 people is to be formed from a group of 2 girls and 5 boys. Let be the number of girls on the committee. What is Var(X)

Var(X)?

(Round answers to the third decimal place if needed)

Oct 22nd, 2017

So var(X)=2/3=0.667

Apr 13th, 2015

Is that correct @jessgib2

Apr 13th, 2015

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Oct 22nd, 2017
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Oct 22nd, 2017
Oct 23rd, 2017
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