document.write( "Question 926821: Suppose that a family has five children, consisting of three girls and two boys. Call the girls Abigail, Brianna, and Courtney; call the boys Duane and Evan. Suppose further that two of these children are to be selected at random.\r
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Algebra.Com's Answer #562496 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "two chosen...
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document.write( "expected value is the SUM of nP(n) where n is 0,1,2
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document.write( ".....
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document.write( "for example
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document.write( "five children: 3G, 2B
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document.write( "Determine the expected value of the number of girls who will be selected
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document.write( ".........
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document.write( "n  P(n)
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document.write( "0  1/10    P(both boys) = 
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document.write( "1  3/5     P(one girl) = 
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document.write( "2  3/10    P(two girls) = 
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document.write( "    1
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document.write( "......
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document.write( "Exp = 0(1/10) + 1(3/5) + 2(3/10) = 6/10 + 6/10 = 12/10) = 1.2  0r 1 girl \n" );
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