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

question 92

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 less than 7 emails per day from their ISP-provided email address, what is the sample proportion of those who did not churn?

• A) .078
• B) .143
• C) .200
• D) .211
• E) .222

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Definitions:

Arched Path

A curved trajectory or route, which can be physical in architecture or figurative in diagrams and presentations.

Change Shape

A function that allows the modification of the form or outline of objects in graphical or design software.

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An option in data transfer or paste operations that strips away any formatting, leaving only the plain text.

Use Destination Theme

In software applications, the practice of applying the existing style and formatting of the destination document or presentation when inserting new content.