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Mathematics, 05.07.2019 10:40 fluffyanimal456
Using graphite furnace atomic absorption spectrometry, the mean cadmium (cd2 ) content value in a homogenized sample of 40 zebra mussles was found to be 7.50 ppb cd2 with a standard deviation (s) of 0.52 ppb cd2 (assume that s is a good approximation of σ). calculate the 90% and 95% confidence intervals (ci) for: (a) two analyses and (b) five analyses of this homogenized sample.
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Using graphite furnace atomic absorption spectrometry, the mean cadmium (cd2 ) content value in a ho...
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