Check my work One group of accounting students used simulation programs, while another group received a tutorial. Scores on an exam were compared. Statistic Simulation Tutorial Mean score * = 9.0 X = 10.0 Sample standard deviation 51 = 2.6 $2 = 2.7 Number of students 01 = 30 2 = 30 a. Construct a 99 percent confidence interval for the true difference in mean scores. (Round your answers to 2 decimal places. Negative values should be indicated by a minus sign.) The 99% confidence interval is from to