4) Which of the following is relatively easier to estimate in time series modeling? A) Seasonality B) Cyclical C) No difference between Seasonality and Cyclical 5) The below time series plot contains both Cyclical and Seasonality component. 500- 400- 300- 200 1950 1952 1954 1956 1958 A) TRUE B) FALSE 6) Sum of weights in exponential smoothing is A) 1 7) The last period's forecast was 70 and demand was 60. What is the simple exponential smoothing forecast with alpha of 0.4 for the next period? A) 63.8 B) 65 C) 62 D) 66 8) If the demand is 100 during October 2016, 200 in November 2016, 300 in December 2016, 400 in January 2017. What is the 3-month simple moving average for February 2017? A) 300 B) 350 C) 400 D) Need more information