The following data are sales data from a coffee shop. be careful looking at these data because one column is sales data and one column is a running exponential smoothing forecast. create a sales forecast for week 10 using the following forecasts: a moving average with k = 4, a weighted moving average with k = 3 and the weights of t = .50, t-1 = .30, and t-2 = .20, and an exponential smoothing model using an alpha of .20.