In an experiment on the effect of caffeine on time to complete a manual task, Dr. Ruybal had three treatment levels: 0 mg of caffeine, 150 mg of caffeine, and 300 mg of caffeine. She assigned an equal number of participants to each of his 3 conditions (N = 39). He calculated his ΣX2tot = 95, ΣXtot = 50, and this partial computation of the SSbn formula: = 70. Plug this into the complete formula and compute the rest for SSbn. Label your answers. A. What is SSbn? B. What is SSwn? C. What is MSbn? D. What is MSwn? E. What is Fobt ? F. Use alpha = .05. What is Fcrit ? AND What should she conclude about the statistical hypothesis? H. Should post-hoc paired comparisons be conducted? Why or why not?
In an experiment on the effect of caffeine on time to complete a manual task, Dr. Ruybal had three treatment levels: 0 mg of caffeine, 150 mg of caffeine, and 300 mg of caffeine. She assigned an equal number of participants to each of his 3 conditions (N = 39). He calculated his ΣX2tot = 95, ΣXtot = 50, and this partial computation of the SSbn formula:
= 70. Plug this into the complete formula and compute the rest for SSbn.
Label your answers.
A. What is SSbn?
B. What is SSwn?
C. What is MSbn?
D. What is MSwn?
E. What is Fobt ?
F. Use alpha = .05. What is Fcrit ? AND What should she conclude about the statistical hypothesis?
H. Should post-hoc paired comparisons be conducted? Why or why not?
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