Multiple choice

Jobs arrive at a facility at an average rate of 5 in an 8 hour shift. The arrival of the jobs follows Poisson distribution. The average service time of a job on the facility is 40 minutes. The service time follows exponential distribution. Idle time (in hours) at the facility per shift will be

  1. $\frac{5}{7}$
  2. $\frac{14}{3}$
  3. $\frac{7}{5}$
  4. $\frac{10}{3}$
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B Correct answer
Explanation

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