a. Use a five-day moving average to smooth the time series. Forecast the closing

a. Use a five-day moving average to smooth the time series. Forecast the closing price for September 4 2002.b. Use a four-day weighted moving average to smooth the time series. Use a weight of 0.4 for the most recent period 0.3 for the next period back 0.2 for the third period back and 0.1 for the fourth period back. Forecast the closing price for September 4 2002.c. Use exponential smoothing with a smoothing constant of a = 0.7 to smooth the time series. Forecast the closing price for September 4 2002.d. Which of the three methods do you prefer?Why?