(Exponential smoothing and Errors) A firm producing a raw material used in chip manufacturing has experienced the following monthly sales history for the first four months of the year. January 37.3 February 27.1 March 48.9 April 41.2 If the forecast for January was 50, determine the one-step-ahead forecasts for February through May using exponential smoothing with a smoothing constant of = 0.3. That is, at the end of January, make a forecast for February and so on. Compute the MSE across four months, Jan-Apr