please help me solve this. also if you could sheo your work so i can udnerstand the process

1. Exponential smoothing is used to forecast automobile battery sales. Two value of a are examined, a = 0.8 and a=0.5. Evaluate the accuracy of each smoothing constant. Which is preferable? (Assume the forecast for January was 22 batteries.) Actual sales are given below: Forecast Month Actual Battery Sales January 20 February 21 March 15 April 14 May June 2 3 2. Auto sales at Carmen's Chevrolet are shown below. Week Auto Sales Forecasting 1 8 13 4 16 10 22 9 11 1 5 6 7 Carmen's decides to forecast auto sales by weighting the four weeks as follows: Weights Period Applied 4 3 10 13 15 2 1 10 Last Week Two weeks aga Three weeks ago Four weeks ago Total f Develop a 4-week weighted moving average from week 5 to week 7___