Simple Moving Average Sales forecast in 4-1 equal $65,500. Show by hand 4-2 Using exponential smoothing with a weight of 0.6 on actual values: (a) If sales are $45,000 and $50,000 for 2017 and 2018,...

Simple Moving Average Sales forecast in 4-1 equal $65,500. Show by hand 4-2 Using exponential smoothing with a weight of 0.6 on actual values: (a) If sales are $45,000 and $50,000 for 2017 and 2018, what would you forecast for 2019 ? (The first forecast is equal to the value of the preceding year.)  (b) Given this forecast and actual 2019 sales of $53,000, what would you then forecast for 2020?   4-3 In Problem 4-1, taking actual 2015 sales of $48,000bas the forecast for 2016, what sales would you for cast for 2017, 2018, and 2019, using exponential smoothing and a weight on actual values of (a) 0.4 and (b) 0.8 ?