Refer to the following frequency distribution on days absent during a calendar year by employees of a manufacturing company:
|
Days Absent
|
Number of Employees
|
|
10 up to 15
|
61
|
|
15 up to 20
|
37
|
|
20 up to 25
|
8
|
|
25 up to 30
|
7
|
|
30 up to 35
|
5
|
How many employees were absent from 20 up to 30 days?