An article gives adaptation scores for three different
treatments: (1) no shock, (2) shock following each stuttered word,
(3) shock during each moment of stuttering. These treatments were
used on each of 19 stutterers, resulting in SST = 3462.00, SSTr =
25.61, and SSB1 = 2965.98.
(a) Construct the ANOVA table and test at level .05 to see
whether true average adaptation score depends on the treatment
given. (Give answers accurate to 2 decimal places.)
| Source | Df | SS | MS | F |
|---|---|---|---|---|
| Treatments | ||||
| Subjects | ||||
| Error | ||||
| Total |
Conclusion
Reject the null hypothesis, there is no dependence in true
average adaptation and the treatment given.
Reject the null hypothesis, there is dependence in true average
adaptation and the treatment given.
Fail to reject the null hypothesis, there is no dependence in
true average adaptation and the treatment given.
Fail to reject the null hypothesis, there is dependence in true
average adaptation and the treatment given.
(b) Judging from the F ratio for subjects (factor
B), do you think that blocking on subjects was effective
in this experiment? Explain.
Yes, fB is quite large, suggesting great
variability between subjects.
Yes, fB is quite small, suggesting great
variability between subjects.
No, fB is quite large, suggesting little
variability between subjects.
No, fB is quite small, suggesting little
variability between subjects.
