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II. An atomic absorption method for the determination of the amount of Iron present in used jet engine oil was found, from pooling 30 triplicate

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

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