A group of biochemistry researchers developed a new medicationfor treating depression. To assess if the new medication iseffective at treating depression, the researchers obtained a sampleof depressive patients from a local clinic. The patients were thenrandomly assigned into taking the medication for a month or not. Inaddition, the patients were also randomly assigned into receivingpsychotherapy for a month or not. At the end of the study, thepatients were asked to fill out a depression inventory in which ahigher score indicates more depression. The data are below. Whatcan be concluded with an ? of 0.05?
Psychotherapy
| Medication | no | yes |
|---|
| no | 10
11
9
13 | 12
10
13
8 |
| yes | 11
13
8
9 | 4
13
4
6 |
Compute the corresponding effect size(s) and indicatemagnitude(s).
Medication: ?2= ; ---Select--- na trivial effectsmall effect medium effect large effect
Psychotherapy: ?2= ; ---Select--- na trivial effectsmall effect medium effect large effect
Interaction: ?2= ; ---Select--- na trivial effectsmall effect medium effect large effect
