Expected Value - Random Variable

Statistics
Tutor: None Selected Time limit: 1 Day

Apr 8th, 2015

P( x red cards) = 26 C x * 26 C (7-x) /52 C 7

E(x) = sum x  26 C x * 26 C (7-x) /52 C 7

=26/52 sum 25 C x-1 *26 C (7-x)/51C6 *7

= 7*26/52 = 7* 1/2 =3.5


Apr 8th, 2015

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Apr 8th, 2015
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Apr 8th, 2015
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