An operation analyst is forecasting this year's demand for one of his company's products based on the following historical data: (4 year ago Quantity sold was 10175), (3 year ago Quantity sold was 12285), (2 year ago Quantity sold was 17551 ) and the last year Quantity sold was 19119. The previous trend line had predicted 12250 for three years ago, 13000 for two years ago and 13750 for last year. What was the mean absolute percent error (MAPE) for these forecasts? O a. 3318 b. 0.18 O c. 3318 d. 18.1 In trend-adjusted exponential smoothing, the trend adjusted forecast (TAF) consists of: Select one: a. the old forecast adjusted by a trend factor. O b. an exponentially smoothed forecast and an estimated trend value. O c. a moving average and a trend factor. O d. an exponentially smoothed forecast and a smoothed trend factor. O e. the old forecast and a smoothed trend factor. In order to determine the probability of timely project completion, it is sometimes necessary to take into account paths other than the critical path. Select one: True False A project has four major activities. Activity A precedes activity B, activity C precedes activity D. 3-point estimates for activities are A(11, 22, 33 ), B( 5, 10, 15). C(2, 2, 2), D( 2, 2, 2 ) weeks. What probability would you assign to a project duration of more than 32 weeks? a. 0.5 O b. 0.1819 c. 0.8194 Od 1