Question: Apply a CART model for predicting churn. Use default misclassification costs. Construct a table containing the following measures: a. Accuracy and overall error rate b.

Apply a CART model for predicting churn. Use default misclassification costs. Construct a table containing the following measures:

a. Accuracy and overall error rate

b. Sensitivity and false-positive rate

c. Specificity and false-negative rate

d. Proportion of true positives and proportion of false positives

e. Proportion of true negatives and proportion of false negatives

f. Overall model cost.

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