Let's say we wanted to find out whether where you sit in class affects how well you do in class. So we randomly divide 27 students into 3 groups of 9 and assign them to sit in the front, middle or back of the classroom. At the end of the semester we compare their final exam scores. Ho: Seat assignment makes no difference in exam performance. HA: Seat assignment does make a difference for at least one of the groups. The final exams scores were ranked from 1 to 27 (lowest to highest) and ranks sums were computed for each group: Rfront = Rmiddle = 135, Rback = 45 a. The rank sum for the front group is missing. What is it? Submit Answer | Tries 0/99 b. The expected rank sum for each group = Submit Answer Tries 0/99 c. The H-stat = 20.86. To find the p-value you would look at the curve. Oz Ot O X2 OF Submit Answer Tries 0/99 d. The p-value is O 5% Submit Answer Tries 0/99 e. Reject the null? O Yes O Nof. If we knew that the exams scores were normally distributed then instead of doing the Kruskall-Wallis test could we use a Z test or t test? O Yes O No, because we have more than 2 groups Submit Answer Tries 0/99