please answer question 2 A & B

please use excel!

Assignment 2 Q1. National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows: Sales Month (000)Units Feb. 12 Mar 22 Apr. 9 May 24 Jun. Jul. Aug 24 19 27 a. Forecast September sales volume using each of the following: (2) A four-month moving average. (3) A weighted average using 0.5 for August, 0.4 for July, and 0.1 for June. (4) Exponential smoothing with a smoothing constant equal to 0.10, assuming a March forecast of 15(000). (5) A linear trend equation 1 68 Q2. Two different forecasting techniques (F1 and F2) were used to forecast demand for cases of bottled water. Actual demand and the two sets of forecasts are as follows: PREDICTED DEMAND Period Demand F2 2 75 3 70 72 70 70 72 72 65 79 78 74 F1 62 69 67 68 4 5 74 69 66 73 76 7 80 74 85 a. Compute MAD for each set of forecasts. Given your results, which forecast appears to be more accurate? b. Compute the MSE for each set of forecasts. Given your results, which forecast appears to be more accurate