discrete probability models and methods probabili
x) = p^x (1-p)^(1-x), where x ∈ {0, 1}. Binomial Distribution Extends Bernoulli trials to n independent experiments, each with success probability p. It models the total number of successes. PMF: P(X = k) = C(n, k) p^k (1-p)^(n-k), for k = 0, 1, ..., n. Poisson D