Question 17, 11.3.23-T HW Score: 65%, 11.05 of 17 points Homework: Ch 11 HW: Two Sample Procedure Save Part 3 of 8 Points: 0.25 of 1 A professor wanted to determine whether an online homework system improved scores on a final exam. In the fall semester, he taught a class using the online homework system (which meant students did their homework online and received instant feedback about their answers along with helpful guidance). In the spring semester, he taught a class without the homework system (which meant students were responsible for doing their homework the old-fashioned way - paper and pencil). The professor made sure to teach the two courses identically (same text, syllabus, tests, meeting time, meeting location, and so on). The table summarizes the results of the two classes on their final exam. Complete parts (a) through (e) below. Click the icon to view the table - X Summary data Fall semester Spring semester (a) What type of experimental design is this? Number of students 27 26 Mean final exam score 72.6 64.3 Standard deviation final exam 9.9 12 O A. Retrospective study score B. Completely randomized design O C. Randomized blocked design O D. Prospective study Print Done (b) What is the response variable? O Homework system O Weather Syllabus O Location Test O Text Final exam scores O Teacher What are the treatments in the study? Select all that apply. Test O Teacher Weather Final exam scores Location 0 Text Homework system Syllabus