Five different laboratories participated in an interlaboratory study involving determinations of the iron level in water samples.
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Question:
Five different laboratories participated in an interlaboratory study involving determinations of the iron level in water samples. The results below are replicate determinations of Fe in ppm for laboratories A through E
(a) State the appropriate hypotheses.
(b) Do the laboratories differ at the 95% confidence level? At the 99% confidence level (Fcrit = 5.99)? At the 99.9% confidence level (Fcrit = 11.28)?
(c) Which laboratories are different from each other at the 95% confidence level?
Related Book For
Introduction to Probability and Statistics
ISBN: 978-1133103752
14th edition
Authors: William Mendenhall, Robert Beaver, Barbara Beaver
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