Mathematics, 12.11.2019 00:31 elijahjacksonrp6z2o7

Apopulation 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? a.7 b.8 c.14 d.16

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