Four analysts perform replicate sets of Hg determinations on the same analytical sample. The results in ppb
Question:
on the same analytical sample. The results in ppb Hg are
shown in the following table:
(a) State the appropriate hypotheses.
(b) Do the analysts differ at the 95% confidence level? At the 99% confidence level (FÏit 5 5.95) At the 99.9% confidence level (FÏit 5 10.80)
(c) Which analysts differ from each other at the 95% confidence level?
Transcribed Image Text:
Determination Analys Analyst 2 Analyst 3 Analyst 4 10.24 10.26 10.29 10.23 10.14 10.12 10.04 10.07 10.19 10.11 10.15 10.12 10.19 10.15 10.16 10.10
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a H 0 Analyst1 Analyst2 Analyst3 Analyst4 H a at least two of the means differ b See spreadsheet nex...View the full answer
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Related Book For
Fundamentals of Analytical Chemistry
ISBN: 978-0495558286
9th edition
Authors: Douglas A. Skoog, Donald M. West, F. James Holler, Stanley R. Crouch
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