ng/mL. Is the mean of the lab's method similar to the certified value at the 95% confidence level?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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The drug fentanyl, and many of its derivatives, have
become a major concern due to their ease of availability and
toxicity. A new lab desires to offer fentanyl analyses to help
regional law enforcement officials test field samples. The lab
obtains a certified fentanyl standard known to have a
concentration of 35.3 ng/mL. In developing the method, analysis
of the certified standard yielded, in 5 replicate measurements, a
mean value x = 36.4 ng/mL and a standard deviation s = 0.7
ng/mL. Is the mean of the lab's method similar to the certified
value at the 95% confidence level?
Transcribed Image Text:The drug fentanyl, and many of its derivatives, have become a major concern due to their ease of availability and toxicity. A new lab desires to offer fentanyl analyses to help regional law enforcement officials test field samples. The lab obtains a certified fentanyl standard known to have a concentration of 35.3 ng/mL. In developing the method, analysis of the certified standard yielded, in 5 replicate measurements, a mean value x = 36.4 ng/mL and a standard deviation s = 0.7 ng/mL. Is the mean of the lab's method similar to the certified value at the 95% confidence level?
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