Hi,	

Binomial Distribution;  Yes  (repeat or not repeat)

 p = .70, q = .30  and n = 12

 P(x = 9) = 12C9(.70)^9(.30)^3    binompdf(12,.70,9)

 P(x ≥ 9 ) = P(x=9) + P(x=10) + P(x=11) + P(x=12)     1 - binomcdf(12,.70,8)

 P(x ≤ 9)  = P(x=0) + P(x=1) + P(x=2).... + P(x=9)    binomcdf(12,.70.9) 

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