Two-Echelon Inventory Optimization for Imperfect Production System under Quality Competition Environment

Table 3

A comparison for the buyer with and without investments^a.

Model without investment			Model with investment			Cost difference
						ΔTC
0.15	189.06	559.96	178.62	524.36	0.093	35.60	6.35
0.20	237.14	693.11	169.81	501.79	0.081	191.31	27.60
0.25	318.91	926.47	162.86	484.26	0.072	442.20	47.73
0.30	369.23	1099.13	157.33	470.37	0.064	628.75	57.20
0.35	421.13	1301.41	146.23	448.96	0.100	852.45	65.50

Note: .