A company offers training programs to improve employees' skills in stress management through an in-person training program and an online training program. The company wants to compare the effectiveness of these two training programs. 52 employees are randomly selected from the company. 26 employees are randomly assigned to the in-person training group, and the other 26 to the online training group. At the end of the training, a stress assessment is administered to both groups. The stress scale ranges from 0 to 100, with higher scores indicating more stress. The average stress score for the in-person group is 48, and for the online group, it is 27. The pooled variance for the difference between the two sample means is 521.23 (S2), what is the t statistic value