I. You will be using the dataset DRE\"? (or DRP.1::1:). Resultsofanexperimenttotestwhetherdirectedread- ing activities in the classroom help elementary school students improve aspects of their reading ability. A treatment class of 21 third-grade students participated in these activitim for eight weeks, and a control class of 23 third-graders followed the same curriculum without the activities. After the eightweek period. students in both classes took a Degree of Reading Power (DRP) test which measures the aspects of reading ability that the treatment is designed to improve. The rst column is the group (treatment or control). and the second is the DRP score (the higher the better). (a) Find the 95% condence interval for the di'erence in average DRP score. (b) If the experimenter is interested in if the treatment group has a higher average than the control group, nd the test-statistic. (c) If the experimenter is interested in if the treatment group has a higher average than the control group. nd the pvalue. (d) Do we fail to reject or reject the null hypothesis if a = 0.05