Hamil Sopa took a random sample of 60 invoices from his year's records. The mean value of

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Hamil Sopa took a random sample of 60 invoices from his year's records. The mean value of invoices in this sample was £125.50 and the standard deviation was £10.20. What are the 90% and 95% confidence intervals for the mean value of all invoices?

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Quantitative Methods For Business

ISBN: 978-0273739470

5th edition

Authors: Donald Waters

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Question Posted: Sep 20, 2012 12:32 AM

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Hamil Sopa took a random sample of 60 invoices from his year's records. The mean value of

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Quantitative Methods For Business

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