One sample t test results |
|
P value and statistical significance: |
|
| The two-tailed P value equals 0.00000118 |
| By conventional criteria, this difference is considered to be very statistically significant. |
Confidence interval: |
|
| The hypothetical mean is 75.000000000 |
| The actual mean is 68.416666700 |
| The difference between these two values is −6.583333300 |
The 95% confidence interval of this difference: |
|
| From −8.102876501 to −5.063790099 |
Intermediate values used in calculations: |
|
| t = −9.5356 |
| df = 11 |
| standard error of difference = 0.690 |