Mathematics, 19.02.2020 04:40 tlgbulldog38

A researcher wants to obtain a sample of 30 preschool children consisting of 10 two-year-old children, 10 three-year-old, and 10 four-year-old children. Assuming that the children are obtained from local daycare centers, this researcher should use sampling.

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A researcher wants to obtain a sample of 30 preschool children consisting of 10 two-year-old childre...