Hey physics professor is disturbed to learn that many students currently do not have a good understanding of facts related to motion. For instance, money do not understand that on a moving carousel the riders on the inside or traveling more slowly than those near the outside edge. The professor decides examine whether passing a college level physics class improve students understanding of motion. Pacifically, the professor compares two groups, one consisting of students who have passed an introductory physics course in the other consisting of students who have not taken such a course. (Note that this is a quasi-experimental design.) The professor measures knowledge of motion on a 50 point scale, with higher members of indicating better knowledge of motion.

students professor measures knowit better knowledge of motion. Is there impact on student understanding? (Use a two-talle Scores 10physics Course Taken a Scores for Students Who Have Passed a Physics Course 40 38 45 47 36 41 35 38 38 46 42 44 45 42 31 42 35 47 36. What is the value of ? a. 1.445 b. 2.242 C 3.739 d. 4 127 37. What are the df a 12 b. 14 C 16 d. 18 38 Is the outcome statistically significant? a Yes b. No