An educational psychologist has developed a mediation techniqueto reduce anxiety. The psychologist selected a sample of highanxiety students that are asked to do the mediation at two therapysessions a week apart. The participants' anxiety is measured theweek before the first session and at each subsequent session. Beloware the anxiety scores for the participants. What can thepsychologist conclude with ?= 0.05?
| before | session 1 | session 2 |
|---|
9
6
8
5
8
6
9
6
8 | 7
7
6
7
1
9
7
7
7 | 6
5
5
4
5
6
5
5
4 |
a) What is the appropriate test statistic?
---Select--- na one-way ANOVA within-subjects ANOVA two-wayANOVA
b) Compute the appropriate test statistic(s) tomake a decision about H0.
critical value = ; test statistic =
Decision: ---Select--- Reject H0 Fail to reject H0
c) Compute the corresponding effect size(s) andindicate magnitude(s).
?2 = ; ---Select--- na trivialeffect small effect medium effect large effect
d) Make an interpretation based on theresults.
At least one of the sessions differ on anxiety.None of thesessions differ on anxiety.
