To conduct a survey of which long distance carriers are used in a particular locality, a researcher opens a telephone book to a random page, closes his eyes, puts his finger down on the page, and then calls the next 75 names.

To conduct a survey of which long distance carriers are used in a particular locality, a researcher opens a telephone book to a random page, closes his eyes, puts his finger down on the page, and then calls the next 75 names. Which of the following is a correct statement?

(A) The procedure results in a simple random sample.

(B) While the survey design does incorporate chance, the procedure could easily result in selection bias.

(D) This is an example of stratified sampling with 26 strata.

(E) Given that the researcher truly keeps his eyes closed, this is a good example of blinding

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To conduct a survey of which long distance carriers are used in a particular locality, a researcher opens a telephone book to a random page, closes his eyes, puts his finger down on the page, and then calls the next 75 names.

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