It is desired to estimate the mean number of hours of continuous use until a printer overheats.
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It is desired to estimate the mean number of hours of continuous use until a printer overheats. If it can be assumed that \(\sigma=4\) hours, how large a sample is needed so that one will be able to assert with \(95 \%\) confidence that the sample mean is off by at least 15 hours?
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Probability And Statistics For Engineers
ISBN: 9780134435688
9th Global Edition
Authors: Richard Johnson, Irwin Miller, John Freund
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