Cars arrive at a local JLUBE franchise at the rate of 1 every 12 minutes.Service times are exponentially distributed with an average of 15 minutes.Jack Burns,the JLUBE owner,has decided to open a second work bay,i.e. ,make the shop into a two-channel system.Under this new scheme,the average customer will wait in an ________ line.
A)M/M/1
B)M/M/2
C)M/D/2
D)M/D/1
E)M/G/2

Question

Quizplus · Accepted Answer

With the arrival rate of 1 every 12 minutes, and an average service time of 15 minutes, the system can be modeled as an M/M/1 queue. With the addition of a second work bay, the system becomes a two-channel system and can be modeled as an M/M/2 queue. Therefore, the average customer will wait in an M/M/2 line.

Cars Arrive at a Local JLUBE Franchise at the Rate