A teacher gives a reading skills test to a third-grade class of " - 25 at the beginning of the school year. To evaluate the changes that occur during the year, students are tested again at the end of the year. Their test scores showed an average improvement of Mp = 12.7 points with s - 100. Use a one-tailed test with a = .01, Confidence Interval 90%. a. Compute and record MD. b. Compute and record the estimated standard error for the mean difference c. Compute and record the Computed T d. Compute and record the Confidence Interval Mean Difference