A random sample of 40 engineers in the firm showed that for


Prospective employees of an engineering firm are told that engineers in the firm work at least 45 hours per week, on the average. A random sample of 40 engineers in the firm showed that, for a particular week, they averaged 44 hours of work with a standard deviation of 3 hours. Are the prospective employees being told the truth?

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Electrical Engineering: A random sample of 40 engineers in the firm showed that for
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