Home Gradebook X Question 13 - Wk 4 - Practice: WI X Course Hero X + X C a ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253A%252F%252Fvle.phoenix.edu%252Fultra%252Fcourses%252F_295538_1%252Foutline%253Flaunch_i... Wk 4 - Practice: Wk 4 Exercises [due Day 5] Saved Help Save & Exit Submit Check my work 13 One group of accounting students used simulation programs, while another group received a tutorial. Scores on an exam were compared. 2 Statistic Simulation Tutorial points Mean score X = 9.1 202 = 10.3 Sample Standard Deviation $1 = 2.4 52 = 2.5 Number of students n1 = 20 72 = 20 eBook a. Construct a 90 percent confidence interval for the true difference in mean scores. (Round your answers to 2 decimal places. References Negative values should be indicated by a minus sign.) The 90% confidence interval is from to b. Do you think the learning methods have significantly different results? O Yes No Mc Graw Hill