Explore BrainMass

Explore BrainMass

    Difference Between t statistic and z statistic

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

    I am having trouble understanding this multiple choice question.

    The reason the t statistic has more variability than the z statistics is that from sample to sample

    a. the sample mean becomes smaller and the sample variance becomes larger
    b. the sample mean becomes larger and the sample variance becomes smaller
    c. neither the sample mean nor the sample variance remains constant
    d. both the sample mean and sample variance become larger

    I think it is letter C. but need explanation. If it is not C. why would it be any of the others?

    Thanks,

    © BrainMass Inc. brainmass.com June 3, 2020, 9:12 pm ad1c9bdddf
    https://brainmass.com/statistics/students-t-test/difference-between-statistic-statistic-171433

    Solution Summary

    The reason for the t statistic has more variability than the z statistics from sample to sample is discussed in the solution

    $2.19

    ADVERTISEMENT