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OpenStudy (anonymous):
Suppose a large population has mean μ and standard deviation σ, and a simple random sample of size n is taken. The sampling distribution of the sample mean x̄ has mean and variance respectively, equal to a. μ/n and σ²/n b. μ and σ/n c. μ/n and σ²/n² d. μ and σ²/n
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