Dr. Chan is interested in understanding whether a new math curriculum leads to improvements in math achievement among middle schoolers. A local school agrees to implement the new curriculum in their 2nd period math classes. Dr. Chan is able to compare the scores from those in the curriculum group to students who have math 3d period (the normal math curriculum). A. What type of study is Dr. Chan conducting - experimental, quasi-experimental, or correlational? (1 point) B. How do you know? (2 points) C. State the null hypothesis for Dr. Chan's study: (2 points) D. State the research hypothesis for Dr. Chan's study: (2 points) E. Dr. Chan concludes that the new math curriculum worked, but this is not the case in the population. What type of error has Dr. Chan made? (2