Interpreting a decision tree

A telecommunications company wants to predict which customers are at risk of churning (i.e., canceling their service). To do this, you use a decision tree that splits customers into risk categories based on three factors:

• Type of contract
• Number of service calls in the last six months
• Additional monthly charges

Take a look at the decision tree. What is the churning risk for a customer with a monthly contract, 3 service calls and $100 of additional monthly charges?