Table 4 Results of the independent sample t-test for comparing the control group and experimental group posttest score
| Â | F | Sig | T | Df | Sig (2-tailed) | Mean difference | SE difference | 95% confidence interval of the difference | |
|---|---|---|---|---|---|---|---|---|---|
Lower | Upper | ||||||||
Posttest equal variance assumed | 19.21 | 0.000 | − 6.12 | 55 | 0.000 | − 4.66 | 0.73 | − 6.19 | − 3.14 |
Equal variance not assumed |  |  | − 6.12 | 43.76 | 0.000 | − 4.66 | 0.73 | − 6.18 | − 3.13 |