Mathematics, 28.02.2021 05:10 hrcatena

A population of middle school students contains 160 sixth graders, 180 seventh graders, and 140 eighth graders. Nine seventh graders were part of a random sample of the population chosen to participate in a survey. For the sample to accurately represent the population, about how many sixth graders should be chosen? 7

8

14

16

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A population of middle school students contains 160 sixth graders, 180 seventh graders, and 140 eigh...

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