The average number of sick leave days used per employee per year in Bygones, Nebraska, is 6.7. The Normal city manager feels the Public Works Department is abusing its sick leave privileges. The frequency distribution for the department follows. Calculate the percentage distribution. In what categories do the mean and median of sick leave days fall? Is the Public Works Department abusing its sick leave?
Number of Days of Sick Leave Taken Number of Employees
0–2 ……………………………………………………………… 4
3–5 ……………………………………………………………… 7
6–8 ……………………………………………………………… 7
9–11 ……………………………………………………………… 14
12–14 ……………………………………………………………… 6