(15) A simple random sample of size $n = 36$ is obtained from a population with $\mu = 54$ and $\sigma = 18$. (a) Determine $\mu_{\bar{x}}$ and $\sigma_{\bar{x}}$. (b) Determine $P(\bar{x} > 56)$. (Round to four decimal places).
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Therefore, μx = μ = 54. Show more…
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