A company has experienced the following monthly sales history for the first four months of c year, in thousands If the forecast for Jan was 25, determine the one-step -ahead forecasts for Feb through May using exponential smoothing with a smoothing constant alpha = 0.15. Repeat the calculations in part a for a value a 0.40. What differences in the forecasts do you observe? Compute the MSEs for the forecasts you obtained in parts a and b for Feb through Apr. which value of a gave the more accurate forecast, based on MSE