How many of the scores (from the group that studied in question #8)...

studied: 87, 100, 94, 79, 92, 100, 95, 83, 89, 99, 100, 91, 89, 95, 100, 93, 96, 83
did not study: 82, 72, 45, 91, 58, 83, 65, 87, 90, 77, 73, 89

...are within one mean absolute deviation of the mean? which scores are within one mean absolute deviation of the mean? (please show all work). worth a ton of points!!!!!!