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Two researchers in two different organizations are studying the average salary of welders in their production facilities. A study of welders across the U.S. shows

Two researchers in two different organizations are studying the average salary of welders in their production facilities. A study of welders across the U.S. shows that the population standard deviation of welder salary is $35/hour.

Researcher 1 surveys a random sample of 400 welders while Researcher 2 surveys a random sample of 200 welders. According to the central limit theorem, the standard error (standard deviation of sample means) for researcher 1 will be lower that researcher 2.

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