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Calculate binomial probability (#846)
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Calculate binomial probability (#846)
Use
P
(
X
=
r
)
=
(
n
r
)
p
r
(
1
−
p
)
n
−
r
P(X=r) = \binom{n}{r} p^r (1-p)^{n-r}
P
(
X
=
r
)
=
(
r
n
)
p
r
(
1
−
p
)
n
−
r
.