I have 20 minutes to complete.

A clinical psychologist is interested in knowing which type of therapy is more effective in decreasing symptoms of social phobia.Patients are randomly assigned to receive one of three types of therapy: Cognitive Behavioral, Psychoanalysis, and Humanistic.Lower scores on the social phobia scale means fewer symptoms.

Source

Sums of Squares

df

Mean Square

F

Therapy

75.52

2

37.76

19.82

Error

34.29

18

1.90

Total

109.81

20

Using the F table, what is the F critical value for this ANOVA?Is the ANOVA significant?