An atomic absorption method for the determination of the


An atomic absorption method for the determination of the amount of iron present in used jet engine oil was found, from pooling 30triplicate analyses, to have a standard deviation s=2.4 µgFe/mL. Calculate the 80% and 95% confidence limits for the results,18.5 µg Fe/mL, if based on

(a) a single analysis

(b) the mean of two

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Chemistry: An atomic absorption method for the determination of the
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