Each problem was worth 20 points, for a total of 60 points.
Most people goot everything almost correct.
It helped that the anaswer in the back of the book were correct.
Here are the results I got in colving the problems:
sqr3s% make run31.4 java TestMMm 30 20 3 lambda = 30.00000000 mu = 20.00000000 rho = 0.50000000 vrho = 0.23684211 p0 = 0.21052632 E[n] = 1.73684211 E[nq] = 0.23684211 E[r] = 0.05789474 Var[r] = 0.00296399 w90 = 0.02874078 sqr3s% make run31.5 java TestMMm 10 20 1 lambda = 10.00000000 mu = 20.00000000 rho = 0.50000000 vrho = 0.50000000 p0 = 0.50000000 E[n] = 1.00000000 E[nq] = 0.50000000 E[r] = 0.10000000 Var[r] = 0.01000000 w90 = 0.16094379 sqr3s% make run31.8 java TestMMmB 30 20 3 4 lambda = 30.00000000 mu = 20.00000000 rho = 0.50000000 p0 = 0.22377622 lambdap= 28.11188811 E[n] = 1.46853147 E[nq] = 0.06293706 E[r] = 0.05223881 U = 0.46853147 loss = 1.88811189 p0 = 0.22377622 p1 = 0.33566434 p2 = 0.25174825 p3 = 0.12587413 p4 = 0.06293706 sum = 1.00000000 Var[n] = 1.32593281