An Internet Service Provider (ISP) Has Randomly Selected a Sample

question 11

Multiple Choice

An internet service provider (ISP) has randomly selected a sample of 223 observations concerning values of the response variable Churn and several predictor variables based on customer activity during the most recently billed month. Here Churn equals Yes if a customer churned-left the internet service provider for another ISP-and equals No otherwise. The predictor variable MinutesOn is the average daily minutes the customer spent online. EmailSent is the average daily number of emails the customer sent from the email address provided by the ISP. ServCalls is the number of times the customer called for service. Below is part of the classification tree they derived from the data collected in the study. Of the sampled customers who spent an average of less than 511 minutes online per day and placed at least 3 service calls, how many did not churn?

• A) 7
• B) 8
• C) 9
• D) 15
• E) 17

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Definitions:

Economic Loss

Financial damages not directly resulting from physical harm to a person or property, such as lost profits or earning capacity.

Ethical Competition

The practice of competing fairly and ethically within a market, adhering to moral standards and avoiding practices that harm consumers or competitors.

Physical Contact

The act of touching or being in direct contact with someone or something.

Assaulted

Being subjected to a sudden, violent attack or an attempt to cause physical harm to another person.