Refer to exhibit 15 1 fobt a 831 b 730 c 727 d 645

23. Refer to Exhibit 15-1. Fobt = ____.
a. 8.31
b. 7.30
c. 7.27
d. 6.45
ANS: C PTS: 1
24. Refer to Exhibit 15-1. Using α = 0.05, Fcrit = ____.
25. Refer to Exhibit 15-1. Using α = 0.05, what do you conclude? 26. Refer to Exhibit 15-1. Estimate the size of the effect. = ____. 27. Refer to Exhibit 15-1. Estimate the size of the effect. η2 = ____.
a. 0.6524
b. 0.6176
c. 0.6318
d. 0.6034
ANS: B PTS: 1
Exhibit 15-2
A clinical psychologist is interested in comparing the effectiveness of short term relaxation
and cognitive-behavioral therapy in treating mild depression. An experiment is conducted
in which 15 patients with mild depression are randomly selected and assigned 5 each to a
relaxation therapy group, a cognitive/behavioral therapy group, and an attention placebo
group. Therapy is administered until the patient is judged no longer depressed or until 10
treatment sessions have elapsed. The following data is obtained. Scores are the number of
sessions for each patient.

Cognitive/Behavioral
Therapy Relaxation
Therapy Attention-Placebo
Group
5
6
8
4
7 6
8
10
9
7 8
10
9
10
9
28. Refer to Exhibit 15-2. SSB = ____.
29. Refer to Exhibit 15-2. SSW = ____.
30. Refer to Exhibit 15-2. sB2 = ____. 31. Refer to Exhibit 15-2. sW2 = ____.
a. 1.40
b. 1.90
c. 1.57
d. 1.88
ANS: B PTS: 1
32. Refer to Exhibit 15-2. Fobt = ____.

c. 8.20
d. 6.88
ANS: D PTS: 1
33. Refer to Exhibit 15-2. Using α = 0.05, Fcrit = ____.
34. Refer to Exhibit 15-2. Using α = 0.05, what do you conclude? 35. Refer to Exhibit 15-2. Estimate the size of the effect. = ____.
a. 0.5226
b. 0.4824
c. 0.4393
d. 0.4658
ANS: C PTS: 1
36. Refer to Exhibit 15-2. Estimate the size of the effect. η2 = ____. 37. The total degrees of freedom for an experiment with n1 = 10, n2 = 12, and n3 = 10 is
____.
38. Which of the following is(are) illegal values for Fobt?