3 Rodney is working on a project for his master s thesis involving the affect of a lack of sleep on information retention and test scores He gave comparable exams to two groups of students Group A was well rested throughout the week leading up to the assessment Group B was only allowed to average 4 5hrs of sleep per night leading up to the assessment The results appear in the table below Group A 56 78 90 92 64 85 79 92 88 97 86 78 89 94 99 Group B 43 87 55 33 21 25 57 73 35 66 15 47 26 23 18 a Create a double sided stem and leaf plot for the given data b Determine the C T s range and skew for each group c What can he conclude from his findings