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Department of Labor reported the average hourly earnings for production workers to be $15.23 per hour...

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Basic Math

Department of Labor reported the average hourly earnings forproduction workers to be $15.23 per hour in 2001. A sample of 75production workers during 2003 showed a sample mean of $15.86 perhour. Assuming the population standard deviation is $1.50, can weconclude that an increase occurred in the mean hourly earningssince 2001? Use ? = .05

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SolutionGivenDepartment of Labor reported the average hourly earnings forproduction workers to be 1523 per hour in 2001That is Population mean Sample size n 75Sample mean Population Standard Deviation Level of    See Answer
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