A Magazine Publisher Always Mails Out a Questionnaire Four Months

A magazine publisher always mails out a questionnaire four months before a subscription ends.This questionnaire asks its subscribers if they are going to renew their subscriptions.On average,only 9% of the subscribers respond to the questionnaire.Of the 9% who do respond,an average of 49% say that they will renew their subscription.This 9% who respond to the questionnaire are known as what?

A) The sample
B) The bias
C) The population
D) The sampling frame
E) The population parameter of interest

Correct Answer:

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