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Which of the following statements is true?

I. A well-designed survey includes making every possible attempt to reach all of the subjects that were randomly selected to participate.

II. A well-designed survey question uses wording that will influence the answers given by the subjects so that the survey will have the results desired by the researchers.

III. A well-designed survey uses a random selection of subjects so that its results can be generalized to a larger population.


I only.


II only.


III only.


I and III only.


II and III only.

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