Consider the following time series data: Day 1, Sales 12; Day 2, Sales 20; Day 3, Sales 22; Day 4, Sales 26; Day 5. Sales 24; Day 6, Sales 13. Required: a) Develop a two-day moving average for this time series. What is the forecast for Day 7? b) Compute the MSE for the two-day moving average. 3) Use alpha = 0.2 to compute the exponential smotthing values for the time series. What is the forecast for day 7?; d) Show, with appropiate computations, which one of the two methods in a) and c) produce a more accurate result?