Mathematics, 16.04.2020 01:41 jjmo

The compressive strength of concrete is normally distributed with mu = 2500 psi and sigma = 50 psi. A random sample of n = 8 specimens is collected. What is the standard error of the sample mean?
Round your final answer to three decimal places (e. g. 12.345).

The standard error of the sample mean is __ psi.

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The compressive strength of concrete is normally distributed with mu = 2500 psi and sigma = 50 psi....