Question: 9. A sample is nindumly selected from a population with a mean of a = 50, and a treatment is administered i that todaviduals in

9. A sample is nindumly selected from a population with a mean of a = 50, and a treatment is administered i that todaviduals in the Sample. Aller treatment, the sample is found to have a man of AN - Shi with a standard deviation of =

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