90.2K

Verified Solution

Link Copied!

Researchers in mental health fields are often interested inevaluating the effectiveness of using food images to enhancepositive mood. Adapting a typical design from such studies, supposewe have participants rate their mood change on a standardself-report affect scale after viewing images of "comfort" foods,fruits/vegetables (F/V), and random non-food images (used as acontrol group). The results are given in the table at right forthis hypothetical study.

Images
Control	F/V	Comfort Foods
0	0	3
1	1	2
1	2	3
3	3	5
0	1	0

(a) Complete the F-table. (Round your answers to twodecimal places.)

Source of Variation	SS	df	MS	Fobt
Between groups
Between persons
Within groups (error)
Total

(b) Compute a Bonferroni procedure and interpret the results.(Assume experimentwise alpha equal to 0.05. Select all thatapply.)

There were no significant differences between any of thegroups.Participants rated a significantly larger mood change afterviewing images of fruits/vegetables compared with the mood changeafter viewing control images.Participants rated a significantlylarger mood change after viewing images of comfort foods comparedwith the mood change after viewing images offruits/vegetables.Participants rated a significantly larger moodchange after viewing images of comfort foods compared with the moodchange after viewing control images.