Posted by **Mike** on Sunday, March 2, 2008 at 4:34pm.

The local video store has determined that 65% of the store's customers are women. What is the probability that the next 3 customers will be women? Round to the nearest percent.

- Math -
**Damon**, Sunday, March 2, 2008 at 4:58pm
p = .65

(1-p) = .35

binomial distribution, n = 3

binomial coefs for n = 3 are 1, 3, 3, 1

probability of three women, zero men in three = coef(3,0)(p)^3 (1-p)^0

= 1 (.65)^3 (1)

= .2746 = 27%

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