One way anova-post hoc test

Reference no: EM1312019

One-Way ANOVA and post-hoc test:

An investigator is interested in the effects of stress on reaction time. She gives a reaction time test to three groups of subjects; one group that is under a great deal of stress, one group under a moderate amount of stress and a third group that is under almost no stress. Theory A suggests that subjects under a moderate amount of stress will perform better than subjects in either the very low or the very high stress groups. Theory B predicts that subjects in the high stress group will perform better than subjects in either the low stress or the moderate stress groups. Theory C predicts that subjects in the moderate stress condition will perform significantly more poorly than subjects in the low stress condition.

Using an alpha level of 0.05, please use SPSS to perform a one-way ANOVA and then determine whether the data below provide evidence for Theory A, Theory B, or Theory C. In other words, is one theory stronger than the others?

High Stress	Moderate Stress	Low Stress
6	8	10
7	10	11
4	11	8
5	7	6
6	12	13
3	11	12

Reference no: EM1312019

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