Pooled-Variance t Tests and Confidence Intervals: An Example
I work through an example of a pooled-variance t test and confidence interval (in the setting of inference for two means).
The MENT/PTSD data is simulated data with the same summary statistics as found in:
Geraerts et al. (2009). Detecting deception of war-related posttraumatic stress disorder. The Journal of Forensic Psychiatry & Psychology, 20(2):278-285.