The data below represent the scores students obtained on a Statistics exam. Summarize the scores by constructing a frequency distribution. Use five classes for your frequency distribution. What are the class boundaries for the last class? 50 54 63 65 67 68 70 70 72 75 75 75 76 76 77 78 78 78 79 81 80 82 83 85 86 88 90 93 93 97 80.5 -90.5 79.5 - 89.5 90.0 - 99.0 89.5 - 99.5 89.0 - 99.0