Problem 6: Maverick Jeans' demand manager decided to evaluate exponential smoothing. To maintain com- pa ra bility, she used the data from problem 6, copied below. Month 1 2 3 4 S 6 7 8 9 10 11 12 Demand 20 18 21 25 24 27 22 30 23 20 29 22 Develop forecasts for months 512. Calculate the Bias and MAD. Use a starting forecast of 20 for month 4 and an alpha value of 0.2. (Note: Adjust all cell values to two decimal points.)