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Range of arsenic blood concentrations

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Arsenic  is a compound that occurs naturally in very low concentrations. Arsenic blood concentrations in healthy adults are Normally distributed with mean µ = 3.2 micrograms per deciliter (µg / dL) and standard deviation  σ  =  1.5  µg / dL.

What is the range of arsenic blood concentrations corresponding to the middle 90 % of healthy adults?

Reference no: EM131429586

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