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 = 2.4 µg Fe/mL. If s is a good estimate of 0, calculate the 80% and 95% 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, (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 = 2.4 µg Fe/mL. If s is a good estimate of 0, calculate the 80% and 95% 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, (c) the mean of four analyses.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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