A researcher conducted a study on the effects of a new drug on depression. The researcher had a control group that received nothing, a placebo group , and an experimental group that received the drug. A depression inventory that provided a measure of depression on a 50-point scale was used (50 indicates that an individual is very high on the depression variable). The ANOVA summary table appears next along with the mean depression scores fore ach condition.
Source df SS MS F
Between Groups 1,202.313
Within Groups 2,118.00
Drug condition Mean n
Control 36.26 15
Placebo 33.33 15
Drug 24.13 15
a) Complete the ANOVA table summary
b) is F obt significant at a= .05; a = .01?
c) Perform post hoc comparisons if necessary
d) What conclusions can be drawn from the F-ratio and the post hoc comparisons?
e) What is the effe3ct size, and what does this mean?
f) graph the means.
Please, I need to see all calculations and explanations.