A graduate student wants to know the opinions of American schoolteachers regarding establishing a national test for high school graduation. She obtains a list of the members of the National Education...

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Extracted text: A graduate student wants to know the opinions of American schoolteachers regarding establishing a national test for high school graduation. She obtains a list of the members of the National Education Association (the largest teachers' union) and mails a questionnaire to a simple random sample of 2,500 teachers on the list. Of those, 1,347 return the questionnaire. 1. The intended population is I Select) 2. Is there sampling bias in this sampling procedure? ( Select) 3. Does this sampling procedure suffer from non-response bias? (Select] 4. The study states that the sample was taken at random from a list. Which of the following describes taking a simple random sample of members from a list of names? ISelect)