Q14. 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 10W 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 signicantly more poorly than subjects in the low stress condition. . Use or. = 5%. a. State the null and alternative hypotheses b. Using an alpha level of .05, please ANOVA and then determine whether the data belovtr provide evidence for Theory A, Theory B, or Theory C. c. Explain your results with respect to F distribution and p value a] a2 a3 High Stress Moderate Stress Low Stress