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 σ = 3.6 pg Fe/mL. If σ is a good estimate of σ, calculate the 95% and 99% confidence intervals for the result 18.5 μg Fe/mL if it was based on (a) a single analysis, (b) the mean of two analyses, and the mean of four analyses.
An atomic absorption method for the determination of the amount o…
Apr 7, 2022
numerade.com
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 s=3.6 μg Fe / mL. If s is a good estimate of σ, calculate the 95 and 99 % confidence intervals for the result 18.5 μg Fe / mL if it was based on (a) a single analysis, (b) the mean of two analyses, and (c) the mean of four analyses. | Numerade
An atomic absorption method for the determination of the amount o…
Oct 16, 2021
numerade.com
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ASTM E246 Determination of Iron in Iron Ores and Related Materials La…
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