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follow all directions IHP 525 Module Six Problem Set Hemoglobin levels in 11-year-old boys vary according to a normal
follow all directions IHP 525 Module Six Problem Set Hemoglobin levels in 11-year-old boys vary according to a normal distribution with σ=1.2 g/dL. How large a sample is needed to estimate µ with 95% confidence so the margin of error is no greater than 0.5 g/dL? A researcher fails to