Nine samples of illicit heroin preparations were analyzed in duplicate by a gas chromatographic method. The samples

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Nine samples of illicit heroin preparations were analyzed in duplicate by a gas chromatographic method. The samples can be assumed to have been drawn randomly from the same population. Pool the following data to establish an estimate of σ for the procedure.

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Fundamentals Of Analytical Chemistry

ISBN: 9780357450390

10th Edition

Authors: Douglas A. Skoog, Donald M. West, F. James Holler, Stanley R. Crouch

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