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

question 35

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, how many churned?

• A) 7
• B) 8
• C) 9
• D) 14
• E) 32

Identify factors that contribute to the effectiveness of genocides.

Recognize the significance of social groups and categories in shaping individual and collective actions.

Evaluate the role of solidarity and social belonging in decision-making processes.

Comprehend the influence of social norms and organization on historical events such as the Holocaust.

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Definitions:

Antagonistic Pleiotropy

A genetic situation where a single gene controls more than one trait, but those traits have opposing effects on an organism's fitness.

Allele Frequency

The relative frequency of an allele (a variant form of a gene) at a particular gene locus in a population, expressed as a proportion or percentage.

Butterfly Populations

Groups or communities of butterflies, which can serve as indicators of environmental change due to their sensitivity to habitat and climate.