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In an evaluation of a method for the determination of fluorene in seawater, a synthetic sample of seawater was spiked with 50 ng ml−1 of fluorene. Ten replicate determinations of the fluorene concentration in the sample had a mean of 49.5 ng ml−1 with a standard deviation of 1.5 ng ml−1 . Calculate the 95% confidence limits of the mean. Is the spiked value of 50 ng ml−1 within the 95% confidence limits?

In an evaluation of a method for the determination of fluorene in seawater, a synthetic sample of seawater was spiked with 50 ng ml−1 of fluorene. Ten replicate determinations of the fluorene concentration in the sample had a mean of 49.5 ng ml−1 with a standard deviation of 1.5 ng ml−1 . Calculate the 95% confidence limits of the mean. Is the spiked value of 50 ng ml−1 within the 95% confidence limits?

MATLAB: An Introduction with Applications
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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In an evaluation of a method for the determination of fluorene in seawater, a synthetic sample of seawater was spiked with 50 ng ml−1 of fluorene. Ten replicate determinations of the fluorene concentration in the sample had a mean of 49.5 ng ml−1 with a standard deviation of 1.5 ng ml−1
.

Calculate the 95% confidence limits of the mean. Is the spiked value of 50 ng ml−1 within the 95% confidence limits?

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