n=7,r=3,p=0.25 Pr= 7!/3!(7-3)!=1(0.25)^3(1-0.25)^4 =0.004943848. Why is this answer wrong ? The correct answer is 0.173035
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Originally Posted by chaosx n=7,r=3,p=0.25 Pr= 7!/3!(7-3)!=1(0.25)^3(1-0.25)^4 =0.004943848. Why is this answer wrong ? The correct answer is 0.173035 For the Binomial distribution: so in this case: RonL
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