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Estimate the mean hours worked for all engineers

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Reference no: EM131812451

Question: A random sample of 40 engineers was selected from among the large number employed by a corporation engaged in seeking new sources of petroleum. The hours worked in a particular week were determined for each engineer selected. These data had a mean of 46 hours and a standard deviation of 3 hours. For that particular week, estimate the mean hours worked for all engineers in the corporation, with a 95% confidence coefficient.

Reference no: EM131812451

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