| Functions | Test value = 3 | |||||
| t | df | Sig. (2-tailed) | Mean difference | 95% CI of the difference | ||
| Lower | Upper | |||||
| Access to information | −21.084 | 478 | 0.000 | −1.31884 | −1.4430 | −1.1952 |
| As a quick reference to information | −18.058 | 478 | 0.000 | −1.21014 | −1.3427 | −1.0776 |
| Enhanced communication and interpretation of information | −19.895 | 478 | 0.000 | −1.17391 | −1.2906 | −1.0572 |
| Improve relation among friends and social ties | −18.741 | 478 | 0.000 | −1.24638 | −1.3779 | −1.1149 |