In Which Of The Following Situations Would Stratified Sampling Be Recommended The Po 826030

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In which of the following statement would stratified sampling be recommended?

  • The population has more male than females, and the researcher is studying a topic related to gender.
  • There are four distinct ethnic groups in New Orleans, the researcher wants to be assured each group is represented equally in the sample.
  • A superintendent wants to be sure she selects teachers from elementary, middle/junior high, and high school in numbers that are equal to the proportions of teachers in these types of school
  • All of these