Table 8 Paired sample t-test results of flicker fusion frequency
Pairing Difference | t | Degree of Freedom | Significant P (Two-tailed) | |||||
|---|---|---|---|---|---|---|---|---|
Average (E) | Standard Deviation | Standard Error Mean | 95% Confidence Interval for the Difference | |||||
Lower Limit | Upper Limit | |||||||
Control - 60 dB | .014 | .751 | .200 | −.419 | .448 | .071 | 13 | .944 |
Control - 70 dB | .407 | .628 | .167 | .044 | .769 | 2.425 | 13 | .031 |
Control - 80 dB | 1.657 | .873 | .233 | 1.152 | 2.161 | 7.100 | 13 | .000 |
Control - 90 dB | 2.107 | .864 | .239 | 1.585 | 2.630 | 8.790 | 12 | .000 |
Control - 100 dB | 3.050 | .728 | .257 | 2.440 | 3.659 | 11.834 | 7 | .000 |
Control - 110 dB | 3.450 | .621 | .219 | 2.930 | 3.969 | 15.712 | 7 | .000 |
Control - 120 dB | 4.125 | .686 | .242 | 3.551 | 4.698 | 17.006 | 7 | .000 |