risk modelling

Question 3 Using the Boston dataset (in the MASS package), fit classification models in order to predict whether a given census tract has a crime rate above the median. (a) First, divide the dataset into training and test sets in the ratio of 2:1. For discussion purposes, run set.seed(123) command. (b) Determine the best binary logistic regression model (in terms of test accuracy) by comparing the full model and the model determined from the hybrid stepwise approach. Justify your selection. (c) Hence, justify whether the best model developed in (b) is significant. (d) Then, check the presence of influential outliers in the dataset. (e) Next, determine the presence of multicollinearity issues among the predictors in the best model determined in (b)