Q1
Workmen arrive at a mine workshop to receive tools for maintenance. The inter-arrival time of workmen at the service counter is exponentially distributed with an average time of 10 min. The service time at the counter is also distributed exponentially with a mean time of 6 min. The average time spent by a workman waiting for his turn to be served in min is
A.
9
AnswerB.
12
C.
15
D.
18
Answer: Option A
Solution
Answer: Option A
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