For the Hawkins Company, the monthly percentages of all shipments received on time over the past 12 months are: 80, 82, 84, 83, 83, 84, 85, 84, 82, 83, 84, and 83.a. Construct a time series plot. What type of pattern exists in the data?b. Compare the three-month moving average approach with the exponential smoothing approach for α= 0.2. Which provides more accurate forecasts using MSE as the measure of forecast accuracy?c. What is the forecast for next month?