Disability Services introduced a new mentorship program to help students with disabilities achieve better scholastic results. Test grades were recorded for 20 students before and after the program was introduced. The average difference in test score {after - before} was 5.95 with a standard deviation of 3.194. If Disability Services is interested in creating a 90% confidence interval for the true average difference in test scores, what is the margin of error? 0 1) 1.0? O 2) 1.0304 0 3) 1.0684 0 4) 0.823? O 5) 0.6264