A researcher investigated thenumber of viral infections people contract as a function of the amount of stress they experienced during a 6-month period. She obtained the following data:

Amount of Stress Negligible Minimal Moderate Severe

Stress Stress Stress Stress

(a) What are H0 and Ha? (b) Compute Fobt and complete the ANOVA summary table. (c) With 5 .05, what is Fcrit? (d) Report your statistical results. (e) Perform the appropriate post hoc comparisons. (f) What do you conclude about this study? (g) Describe the effect size and interpret it. (h) Estimate the value of that is likely to be found in the severe stress condition.