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Suppose that we will take a random sample of size n from a population having mean...

Suppose that we will take a random sample of size n from a population having mean µ and standard deviation σ. For each of the following situations, find the mean, variance, and standard deviation of the sampling distribution of the sample mean  :


(a) µ = 20, σ = 2, n = 41 (Round your answers of "σ" and "σ2" to 4 decimal places.)

µ
σ2
σ


(b) µ = 502, σ = .7, n = 132 (Round your answers of "σ" and "σ2" to 4 decimal places.)

µ
σ2
σ


(c) µ = 3, σ = 1.0, n = 7 (Round your answers of "σ" and "σ2" to 4 decimal places.)

µ
σ2
σ


(d) µ = 120, σ = 3, n = 1,722 (Round your answers of "σ" and "σ2" to 4 decimal places.)

µ
σ2
σ
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