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

question 76

Short Answer

An internet service provider (ISP) has randomly selected a sample of 347 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. Fill in the missing counts and rates in the classification tree above.

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Definitions:

Electroencephalography

A medical imaging technique that records the electrical activity of the brain to diagnose conditions.

Encephalographic Stimulation

A method involving the use of EEG technology to stimulate the brain, possibly for diagnostic or therapeutic purposes.

Frontal Lobes

The part of the brain located at the front of each cerebral hemisphere, responsible for executive functions, decision-making, and moderating social behavior.

Basal Ganglia

Groups of neurons located deep in the brain that play a key role in movement control and learning.