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

question 73

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 at least 511 minutes online per day and sent an average of fewer than 7 emails per day from their ISP-provided email address, what is the sample proportion of those who churned?

• A) .078
• B) .527
• C) .571
• D) .778
• E) .885

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Definitions:

Within The Organization

Pertaining to actions, processes, or relationships that occur internally in a company or an institution.

ISO Certification

A seal of approval from the International Standards Organization signifying that a company meets high standards of quality and efficiency in its operations.

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Standards that define the criteria for organizations aiming to ensure products, services, and processes meet consistent levels of quality and are reliable worldwide.

Value Chain Analysis

A strategic analytical tool used to identify the primary and support activities of a business that add value to its products and services.