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Two populations are surveyed with simple random samples a

Question: Two populations are surveyed with simple random samples. A sample of size n1 is used for population I, which has a population standard deviation σ₁; a sample of size n₂ = 2n₁ is used for population II, which has a population standard deviation σ₂ = 2σ₁. Ignoring finite population corrections, in which of the two samples would you expect the estimate of the population mean to be more accurate?

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