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

question 43

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, how many did not churn?

• A) 14
• B) 9
• C) 7
• D) 6
• E) 5

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Definitions:

Growth Mindset

The belief that one's fundamental capacities and talents can be developed over time through perseverance, effort, and dedication.

Set Traits

Characteristics or attributes that are considered to be inherent or established in a person or thing.

Talents

The natural aptitudes and skills possessed by an individual, often utilized in various professional and creative fields.

Improvisation Guidelines

A set of principles or rules designed to aid in the spontaneous and creative process of improvisation, often used in theater, music, and problem solving.