The chief scientists of a large online rSelect the most complete and correct answer. a. A given model's training accuracy is typically higher than the model's test accuracy. b. A given model's training accuracy is typically lower than the model's test accuracy. c. A model's training accuracy is always the same as the model's test accuracy d. When comparing between the performances of two alternative classification models, the model which has higher training accuracy is likely to be a better predictive model since it fits the training data better. e. None of the answers above is correctetailer had proposed to use data on users' online behaviors (pages visited, etc.) as well as demographics (when available) to (1) estimate whether a customer will make a purchase, and (2) estimate how much money a customer will spend if s/he were to make a purchase. Select the most correct and complete answer below: a. The first task (estimate whether a customer will make a purchase) is a regression task. b. The first task (estimate whether a customer will make a purchase) is a classification task. c. The second task (estimate how much money a customer will spend if s/he were to make a