Explore BrainMass

Explore BrainMass

    Mean and Variance of Binomial Distribution

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Assume that X follows binomial distribution with parameters n and p. Find its mean and variance.

    © BrainMass Inc. brainmass.com June 3, 2020, 5:22 pm ad1c9bdddf
    https://brainmass.com/statistics/probability/mean-and-variance-of-binomial-distribution-23636

    Solution Preview

    Solution. Since X~b(n,p), we have
    P(X=k)=C(n,k)p^k(1-p)^(n-k)
    where C(n,k)=n!/[k!*(n-k)!]
    So,
    E(X)=Sum{k=0,n}k*P(X=k)
    ...

    Solution Summary

    Assume that X follows binomial distribution with parameters n and p. Find its mean and variance.

    $2.19

    ADVERTISEMENT