Let X∼Binomial(n,p)X \sim \text{Binomial}(n, p)X∼Binomial(n,p). What is Var(X)Var(X)Var(X)?
npnpnp
np(1−p)np(1-p)np(1−p)
n(1−p)n(1-p)n(1−p)
np2np^2np2