Q4 Data for operational cost to run a factory with three type of product Month 1 Cost (RM) A B с 43339 541 928 515 2 43936 692 711 929 3 43364 710 824 800 4 43133 675 758 979 5 46343 1147 635 1165 6 43922 939 901 651 7 43203 755 580 847 8 43000 908 598 942 9 41967 738 682 630 10 47582 1175 1050 1113 11 44003 1075 984 1086 12 44303 640 828 843 13 46070 752 708 500 14 47353 989 804 813 15 45968 823 904 1190 16 47781 1108 1120 1200 17 42202 590 1065 731 using EXCEL answer the following (a) Formulate the estimated regression equation for the full model with all 3 variables with residual (b) Based on Q4 (a). predict the operational cost for i. ii. Product A (700 units). Product B (999 units) and Product C (1100 unit). Product A (721 units), Product B (701 units) and Product C (925 units).