Mathematics, 22.05.2020 14:59 louistwdg

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?
O 7
O 8
O 14
O 16

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