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

Jobs arrive at a facility at an average rate of 5 in an 8 hour shift.

1.	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
A.	\(\frac{5}{7}\)
B.	\(\frac{{14}}{3}\)
C.	\(\frac{7}{5}\)
D.	\(\frac{{10}}{3}\)
Answer» C. \(\frac{7}{5}\)