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October 22, 2014

October 22, 2014

Posted by **janice** on Saturday, July 13, 2013 at 12:16am.

- statistics -
**MathMate**, Saturday, July 13, 2013 at 8:39amBinomial distribution:

- large population=>probability is (almost) constant

- p=0.5 (men) q=(1-0.5) (women)

- random independent multiple trials N=9

- 2 possible outcomes at each trial

P(7)=C(9,7)*p^7 * q^2

=(9!/(2!7!))*0.5^7*(1-0.5)^2

=0.07 (approximately)

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