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4. In a 2009-2016 study, the National Health and Nutrition Examination Survey (NHANES) reported that the mean total body iron level in US pregnant women

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4. In a 2009-2016 study, the National Health and Nutrition Examination Survey (NHANES) reported that the mean total body iron level in US pregnant women was 3.86 mg/kg. In a random sample of n = 51 present-day US pregnant women from a large medical data base, the mean total body iron level was 4.12 mg/kg with a standard deviation of 8.21 mg. a) Construct a 98% confidence interval for the true mean total body iron level in present-day US pregnant women. b) Use the confidence interval you constructed in (a) to comment on whether the true mean total body iron level in present-day US pregnant women is different than reported in the 2009-2016 NUANES study. Explain your reasoning clearly. acer

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