Question

(d)
7
(c)
6
A factory which employs 100 people is divided into three departments. The arithmetic mean output per
employee per month for all employees is 139 units. Mean output per employee per month for two of
the departments is as follows:
Mean output (units)
Department
No. of employees in dept.
130
54
1
160
2
22​

Answer 1

Step-by-step explanation:

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