A group of 8 students were given the same standardized test twice to see whether retaking the test affected the score. The 70 200 table gives the score differences for the 8 students. Use the paired t-interval procedure to determine a 99% confidence - 20 60 interval for the difference between the mean scores on the first test and the second test (retake). (Note: d = 41.25 and 90 40 So = 44.54.) 90 -20 . . . The 99% confidence interval is from to (Round to two decimal places as needed.)