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1)State the nonprobability sampling method described in each example

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1)State the nonprobability sampling method described in each example.

  1. A researcher studies student attitudes about recycling behavior by selecting college participants from a participant pool at the local college and has each student complete a survey about his or her attitudes about recycling.
  2. A researcher conducts a study on eating in a movie theater by asking patrons as they enter a movie theater if they are willing to participate in a study while they watch their movie. The researcher selects the first 50 women and the first 50 men who volunteer to participate in the study.

2) State the probability sampling method described in each example.

  1. To determine why many residents at a local nursing home are not eating their full meals, a researcher obtains a list of all residents at the nursing home and separates the list into two subgroups: residents who eat their full meals and residents who do not. The researcher randomly selects 12 residents from each subgroup to be in her sample.
  2. A professor obtains a list of all registered students in his class and randomly selects 40 students from the list to participate in a course evaluation.
  3. An administrator at a local elementary school identifies that 24 classes are taught throughout the day at her school. From this list, she selects 12 classes and measures preparedness among all students in those 12 classrooms.
  4. A psychologist randomly selects one athlete to participate in a study from a list of all athletes on campus. Then, beginning with the randomly selected athlete, he selects every fourth athlete on the list to also participate in the study.

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