Explain as precisely as possible what Equation X 2 s/n (7.4) means, and the reason for

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Explain as precisely as possible what Equation X̅ ± 2 s/√n (7.4) means, and the reason for the 2 in the formula?
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Business Analytics Data Analysis And Decision Making

ISBN: 1209

6th Edition

Authors: S. Christian Albright, Wayne L. Winston

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