Scenario 1: In a research study on self-esteem, 30 middle
school students had a mean score of 81, with s = 7.5, and 30
high school students had a mean score of 72, with s = 9.3
Higher scores indicated higher self-esteem.
SE= 2.181
t-stat= 4.126
DF=29
Critical value assuming a= 0.05
2.045
![Scenario 1 In a research study on selfesteem 30 middle school students had a mean score of 81 with s 75 and 30 high school students had a mean score of 72 with class=](https://us-static.z-dn.net/files/d93/56b9a8e2835cb36ab8cd88b17eca0772.png)