x n
P(X)
nC0 qn
nC1 qn–1p1
nC2 qn–2p2
nCx qn–xpx
nCn pn
The above probability distribution is known as binomial distribution with parameters
n and p, because for given values of n and p, we can find the complete probability
distribution The probability of x successes P(X = x) is also denoted by P(x) and is given by
P(x) = nCx qn–xpx,    x = 0, 1, , n