Question

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 = 18, σ = 2, n = 22 (Round your answers of "σ " and "σ 2" to 4 decimal places.) (b) µ = 494, σ = .3, n = 125 (Round your answers of "σ " and "σ 2" to 4 decimal places.) (c) µ = 2, σ = .4, n = 9 (Round your answers of "σ " and "σ 2" to 4 decimal places.) (d) µ = 144, σ = 8, n = 1,159 (Round your answers of "σ " and "σ 2" to 4 decimal places.)

Answer 1