Binomial random variable
If x is a binomial random variable, calculate P(x) for each of the following cases:
(a) P(x < or = 1) n=5 p=0.9 P(x)=
(b) P(x > 1) n=4 p=0.7 P(x)=
(c) P(x < 2) n=3 p=0.3 P(x)=
(d) P(x > or = 4) n=5 p=0.2 P(x)=
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