dawgmaje3264 dawgmaje3264
  • 24-11-2022
  • Mathematics
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at a high school administrators wish to collect a sample of 80 students. they decide to randomly sample 20 freshmen, 20 sophomores, 20 juniors, and 20 seniors and ask them how much time they spent on their math homework last night. which of the following methods was use to select the sample?

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