a. In your final model, what factors have positive influence on risk of cancer and what factors have negative influence on risk of cancer? b. use your final model to predict the probability of cancer for this patient: Remember if you have three variables left, the prediction of probability will be of this form: predicted_prob= exp(sumproduct similar in problem1) /(1+exp(sumproduct similar in problem1)) AFP CEA CA125 CA199 CA50 5.05 10.7 8.12 20.62 57.39