Hi,

Note: The probability of x successes in n trials is: 

P = nCx*  where p and q are the probabilities of success and failure respectively. In this case p=5/8 & q= 3/8 

nCx = 

For Ex:

P(3) = 20 = .2575

p(≥3) = P(3)+P(4)+P(5)+P(6)= .8535

Can Recommend Stattrek.com for Bionomial Probability Problems 

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