.System A has an average arrival rate of 12/hr (std deviation is 3) and an average service rate of 14/hr (std dev.is 2).

System B has an average arrival rate of 24/hr (std dev. is 5) and an average service rate of 28/hr (std dev. is 4).

Based on the above data, which system has a greater probability of a line developing?

a.

System A

.

System B

c.

The probability of a line developing is the same for system A and system B