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Activity sampling
The study of a single machine presented the following results after 95 random observations for packaging were recorded to determine machine idle time and machine running time.
Machine
|
No. of observations
|
Working
(Machine running)
|
Idle
|
A
|
95
|
75
|
20
|
%
|
100
|
|
|
Calculate the
machine idle observation percentage using the above table and state which
ONEof the following options is the correct
answer?