Explore BrainMass

Explore BrainMass

    Sample size

    Not what you're looking for? Search our solutions OR ask your own Custom question.

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

    1) Solve formula for variable:

    The formula for the margin of error to establish a confidence interval has been found mathematically to be:
    e= z s / square root of n
    Where: e = margin of error
    z = critical value
    s = sample standard deviation
    n = sample size

    Given known values for e, z, and s solve the margin of error formula n to determine sample size.

    (See attachment for full question).

    © BrainMass Inc. brainmass.com November 24, 2022, 11:57 am ad1c9bdddf


    Solution Summary

    Given the formula for margin of error, derives the formula for sample size.