Consider a two--station production line with single machines. Jobs arrive to the first station at an average rate of 5 per hour with a squared coefficient of variation equal to 1.21. Effective processing times average 0.125 hours with a squared coefficient of variation equal to 0.81

a) What is the first stations utilization?

u = ______________

b) What is the squared coefficient of variation of the arrivals to the second station?

C2a = _____________

c) If an identical second machine was added to the first station by what percentage does the squared coefficient of variation of the arrivals to the second station change?

% change in C2a = ______________