nswer each question based on the given data. (Calculate to two decimal points) The regression equation based on a given data's CMA(P=2) is Y=4+2X Let the seasonal index of Winter (S1), year 1 be 1.0 and the seasonal index of Summer (S2), year I be 0.5 a. Forecast Winter demand for year 1 using Winter's method with Alpha =0.1, Beta =0.2, and Gamma =0.5. ( 4 pbs b. What is L1? (4 pts) c. What is the seasonal index of Winter, year 2 ? (4 pts) d. Suppose L4 =10,T4=4,S4=2,S5=3,S6=5, and S7=4. Forecast Winter demand for year 4 using Winter's modd wiht Alpha =0.1, Bed =02, and Gamma =0.5.(4pts)