HW-16 Consider the following Monthly time series data and Apply Holt's model to the forecast (Carry on up to 3 decimal points: e.g., 3.215) a) Determine an based on the given data. (Use Excel: 3 points) b) Predict demand for February (F1) using Holt's model with (2 points: Don't use an Excel computer, Show your work using an equation) c) Predicted demand for March (F2) using Holt's model with (3 points: Don't use an Excel, Show your work using an equation) d) Suppose let L3 =50 and T3=5. Predict demand for July using Holt's model with (2 points)