Posted by **Jennifer** on Tuesday, December 13, 2011 at 6:15pm.

A researcher has collected statistics pretest scores for students representing 3 different age groups

18-30 31-45 45 and up

3 5 10

7 10 2

9 9 8

6 8 8

4 6 5

Do hypothesis test using ANOVA to find if significant difference. Use alpha .05. All hypothesis steps and find degrees of freedom and critical values, calulate test statistic and effect size and write results in apa style.

Use Scheffe posttest if appropriate.

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