Case Study Consider monthly demand for the Marai Corporation as shown in the table below. Forecast the December sales based on the below questions. Use the spreadsheet analysis and show all related functions and models used to resolve the below issues 1) Forecast December sales using Naive method and compute relevant MAD 2) Forecast December sales using 2-month moving average and compute relevant MAD 3) Forecast December sales using the weighted average (50%/30%/20%) and compute relevant MAD 4) Forecast December sales using Regression and compute relevant MAD 5) Which method is the most accurate? Justify your answer Case Study Consider monthly demand for the Marai Corporation as shown in the table below. Forecast the December sales based on the below questions. Use the spreadsheet analysis and show all related functions and models used to resolve the below issues 1) Forecast December sales using Naive method and compute relevant MAD 2) Forecast December sales using 2-month moving average and compute relevant MAD 3) Forecast December sales using the weighted average (50%/30%/20%) and compute relevant MAD 4) Forecast December sales using Regression and compute relevant MAD 5) Which method is the most accurate? Justify your