Explore BrainMass

Explore BrainMass

    Difference Between Testing a Single Mean or Two Means

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

    Explain the difference between testing a single mean and testing the difference between two means.

    What two assumptions must be met when one is using z test to test differences between two means?

    When can the sample standard deviations s1 and s2 be used in place of the population standard deviations σ1 and σ2 ?

    © BrainMass Inc. brainmass.com June 3, 2020, 10:32 pm ad1c9bdddf
    https://brainmass.com/statistics/hypothesis-testing/236402

    Solution Preview

    The difference is that when testing a single mean, you're also testing whether the mean is >a, <a, =a. When testing two means µ1 and µ 2, your testing if µ 1- µ 2>a, µ ...

    Solution Summary

    The differences between testing a single mean or testing the difference between two means is examined. The two assumptions that must be met when one is using a z test to test differences between two means is given.

    $2.19

    ADVERTISEMENT