Question 21 When is the exponential smoothing model equivalent to the nave forecasting model? Not yet answered Select one: = a. alpha Marked out of 0 1.00 b. alpha= 0.5 P Flag question c. alpha=1 d. alpha= 5 Question 22 Which of these quantitative techniques is a causal model? Not yet answered Select one: Marked out of a. linear regression 1.00 b. weighted moving average P Flag question c. last period d. exponential smoothing