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A population of values has a normal distribution with μ = 218.5 μ = 218.5 and...

A population of values has a normal distribution with μ = 218.5 μ = 218.5 and σ = 87.6 σ = 87.6 . You intend to draw a random sample of size n = 195 n = 195 . Find P92, which is the mean separating the bottom 92% means from the top 8% means. P92 (for sample means)=

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Answer #1

Let denotes the sample mean for a random sample of size n = 195

ans-> P92 = x = 227.31

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