(Lab 11: 1- & 2-Sample T-Tests and T-Intervals) An experiment is conducted to determine whether intensive tutoring (covering a great deal of material in a fixed amount of time) is more effective than paced tutoring (covering less material in the same amount of time). Two randomly chosen groups are tutored separately and then administered proficiency tests. The sample size of the intensive group is 10 with sample average 76 and sample SD 6; the sample size of the paced group is 12 with sample average 70 and sample SD 8. May we conclude that the intensive group is doing better?