hello .. can you please answer these questions showing full work pease I need

2/5 1. Following table shows the sales of smart phones for the past several months. Use this data to answer the following questions Products 3WMA Exp. Smoothing Month sold Forecast Forecast 511 alalala a. Find the forecast for month 8 using 3 month weighted moving average (WMA) with weights (0.5, 0.3 and 0.2). The most recent day having the most weight. (15 Points) 3/5 b. Find the forecast for month 8 using exponential smoothing with the smoothing constant 0.2 (20 Points) c. Compare the two methods using MSE as a measure of error. Which method is better for this data? (15 Points) 45 2. What does qualitative forecasting mean? When is qualitative forecasting used? Describe two qualitative techniques and indicate at least two advantages and two disadvantages for each technique. (30 Points) 5/5 3. Briefly describe the four components of time series data (20 Points)