Explore BrainMass

Explore BrainMass

    Two-factor ANOVA test for Johnson Shampoo

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

    Johnson Shampoo Company sells three shampoos - for dry, normal, oily, and greasy hair. Sales (in $millions) are given below.

    Month Dry Normal Oily Greasy
    June 7 9 12 10
    July 11 12 14 12
    August 13 11 8 9
    September 10 10 10 7
    October 8 13 7 8

    Using the .05 level of significance, apply a two-factor ANOVA test to determine:

    If the mean sales for dry, normal, oily, and greasy hair are the same (state F and the critical value and interpretation).

    If the mean sales are the same for each of the five months (state F and the critical value and interpretation).

    © BrainMass Inc. brainmass.com June 3, 2020, 8:22 pm ad1c9bdddf
    https://brainmass.com/statistics/analysis-of-variance/two-factor-anova-test-for-johnson-shampoo-134342

    Attachments

    Solution Preview

    Please see the attached file for a complete solution.

    Johnson Shampoo Company sells three shampoos - for dry, normal, oily, and greasy hair. Sales (in $millions) are given below.

    Month Dry Normal Oily Greasy
    June 7 9 12 10
    July 11 12 14 12
    August 13 11 8 9
    September 10 10 10 7
    October 8 13 7 8

    Using the .05 level of ...

    Solution Summary

    The solution performs a two factor ANOVA test for Johnson shampoos.

    $2.19

    ADVERTISEMENT