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    A clinical researcher is interested in testing the effectiveness of an anti-depressant drug. She randomly assigned 10 depressed people to a placebo condition, additional 10 depressed people to the drug condition, and additional 10 depressed people to the double-dosage condition. Prior to the experiment, all 30 people had equivalent degrees of ddepression. After a month of respective treatments, the participants filled out a depression questionnaire. The individual scores (higher scores indicating greater depression) are shown below. Conduct an appropriate statistical analysis using alpha =0.05

    Placebo Drug Double dosage
    69 20 45
    50 51 26
    54 45 11
    60 25 35
    55 55 15
    70 45 60
    59 20 45
    65 6 41
    40 30 55
    78 33 57

    *see attachment for table and figures

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    https://brainmass.com/statistics/analysis-of-variance/35779

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    Solution Summary

    The solution conducts ANOVA to test the hypothesis that the treatment means are not equal.

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