Hello! Im a bit confused on the following questions, can someone help me work them out? Thank you in advance!

Question 3 20 pts The following are the recent historical sales of iPhone 12 at a local Apple Store in Northridge. Month Sep Oct Nov Dec Jan iPhone 12 77 180 88 78 90 Using the weighted moving average method, with weights of 0.62 one period ago, 0.23 two periods ago, and 0.15 three periods ago, to forecast sales for February. keep two decimals if not exact, either round up or down is ok. For example, for 0.1346, (0.13 or .13) and (0.14 or . 14) are correct.D Question 4 10 pts An Apple Store in Northridge uses the exponential smoothing method to forecast its revenue per month. The following table shows their actual sales and forecasts in the past few months. Month Jan Feb March April May Actual sales 20 23 25 36 35 Forecasted sales 21 25 16 36 29 Please calculate the MAPE value of the forecasting method. keep two decimals if not exact, either round up or down is ok. For example, for 0.1346, (0.13 or . 13) and (0.14 or .14) are correct. _____________ Question 5 10 pts An Apple Store in Northridge uses the exponential smoothing method to forecast its revenue per month. The following table shows their actual sales and forecasts in the past few months. Month Jan Feb March April May Actual sales 20 35 25 35 36 Forecasted sales 25 20 17 36 29 Please calculate the MSE value of the forecasting method. keep two decimals if not exact, either round up or down is ok. For example, for 0.1346, (0.13 or .13) and (0.14 or.14) are correct