(0) P > A researcher is interested in whether talking about anxiety in class would help students' anxiety levels. 9 clinically anxious students were presented with Beck Anxiety Inventory before the semester started. During the semester, the teacher explained the nature of anxiety, the changes occurring in human body and what they mean and how to deal with anxiety. After the semester, same students were presented with Beck Anxiety Inventory again. The scores are shown below. Using the 4-step hypothesis testing, indicate whether taking a class on anxiety is an effective tool to decrease anxiety levels of the students. Beginning of the semester X = 50 X2=55 X3=61 X = 40 X5= 47 X6=48 End of semester X= 42 X2=49 X3= 55 X4=38 X5= 40 X7= 52 X8= 56 X9= 49 X6=43 X7= 46 Xg= 52 X9= 46