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Posted by on Wednesday, August 28, 2013 at 8:15pm.

Need help on if the sample given is random or not random.
The first 50 nurses at a nursing convention write their names on slips of paper and place them in a drawing box. After the box is shaken, 20 names are pulled from the box and each person chosen completes a survey about their transportation to the convention.
Thanks...

  • Math - , Wednesday, August 28, 2013 at 8:18pm

    It's not random. Only the first arrivals were sampled.

    However, if the questionnaire were geared to elicit information from only the first arrivals, then the sample would not be random.

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