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

question 99

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 fewer than 3 service calls, what is the sample proportion of those who churned?

• A) .067
• B) .078
• C) .529
• D) .861
• E) .885

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Definitions:

Succession Planning

The process of identifying and developing new leaders who can replace old leaders when they leave, retire or die, ensuring the organization's continuous success and leadership transition.

Personal Development

The process of self-improvement through activities that enhance one's talents, potential, consciousness, and ability to realize dreams and create wealth.

Mentoring

A relationship in which a more experienced or knowledgeable person helps guide a less experienced or less knowledgeable person.

Person Receiving Mentoring

An individual who is guided, advised, or supported by a more experienced person in a mentorship relationship.