Question 18 (a-d) A psychologist who reported the results of a study in which 25 Iraq combat veterans completed a daily perceived stress scale with...

Question 18 (a–d)

A psychologist who reported the results of a study in which 25 Iraq combat veterans completed a daily perceived stress scale with scores ranging from 0 to 45. The average score of the combat veterans was 16. Identify each of the following for this study.