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100 air samples are taken at randomly selected locations in the Southeastern US; the sample mean AQI is 42 and the sample standard deviation is

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100 air samples are taken at randomly selected locations in the Southeastern US; the sample mean AQI is 42 and the sample standard deviation is 10. The standard deviation of the sample mean AQI for samples of size 100 is: A. 1.0 B. 1.6 C. 10.0 D. 16.0 E. 162/100

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