Per-share earnings data comparing the current quarter's earnings with the previous quarter are in the file entitled

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Per-share earnings data comparing the current quarter's earnings with the previous quarter are in the file entitled Earnings2005 (The Wall Street Journal, January 27, 2006). Provide a 95% confidence interval estimate of the difference between the population mean for the current quarter versus the previous quarter. Have earnings increased?
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Statistics For Business And Economics

ISBN: 9780538481649

11th Edition

Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams

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