| N | Mean | Std. Deviation | Std. Error | 95% Confidence Interval for Mean | |
Lower Bound | Upper Bound | |||||
Individual preference | 37 | 3.486 | 0.617 | 0.101 | 3.281 | 3.692 |
Relevant customers | 43 | 3.775 | 0.662 | 0.101 | 3.572 | 3.979 |
No recommended information sources | 28 | 3.274 | 0.315 | 0.060 | 3.152 | 3.396 |
Total | 108 | 3.509 | 0.351 | 0.034 | 3.442 | 3.576 |