binomial distribution, check answer please

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• August 10th 2006, 09:45 AM
kwtolley
binomial distribution, check answer please
In a binomial distribution, the probability of 25 successes, where n=65 and p=0.35 is ____.

P(x=25)=C(25,65)(0.35)^25
answer C(65,25)(0.35)^25(0.15)^40. thanks for checking. list of possible answers are -

1. C(65,25)(0.35)^25(0.15)^40
2. C(65,25)(0.35)^25(0.65)^40
3. C(65,25)(0.35)^40(0.65)^25
4. C(65,25)(0.35)^25
• August 10th 2006, 11:46 AM
ThePerfectHacker
$_{65}C_{25}(.35)^{25}(.65)^{40}\approx .08$
• August 10th 2006, 08:06 PM
kwtolley
thanks
thanks you i got it now.