A group of 8 students were given the same standardized test twice to see whether retaking the test affected the score. The table gives the score differences for the 8 students. Use the paired t-interval procedure to determine a 98% confidence interval for the difference between the mean scores on the first test and the second test (retake) (Note: d=2125 and sy = 4291) 30 10 80 10 -400 10 80 30 8888 The 98% confidence interval is from o (Round to two decimal places as needed) Next