as a consultant, you have been asked to generate a unit demand forecast for a product for year 2020 using exponential smoothing. the actual demand in year 2019 was 750. the forecast demand in year 2019 was 960. using these data and a smoothing constant alpha of 0.3, which of the following is the resulting year 2020 forecast value? multiple choice 1,120 1,023 897 766 813