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ANOVA: Testing Three Treatment Means

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The following is sample information. Test the hypothesis at the .05 significance level that the treatment means are equal.

Treatment 1.... Treatment 2......Treatment 3
9...............................13..................10
7...............................20...................9
11............................14...................15
9..............................13...................14
12............................15...................10

Questions:
- State the null hypothesis and the alternate hypotheses.
- What is the decision rule?
- Compute SST, SSE, and SS total.
- Complete an ANOVA table.
- State your decision regarding the null hypothesis.

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Solution Summary

This solution is presented in an Excel spreadsheet which is attached and illustrates how to properly conduct an ANOVA test. All calculations are provided. By clicking directly onto the cells of the spreadsheet, it illustrates what functions were required to derive the desired values.

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