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 o, 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.
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 o, 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.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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 o, 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.
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