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In a study of the effects of prenatal cocaine use on infants the following sample data were obtained for weights at birth n 190 h bar 2700g s 645 Use the sample data to construct

In a study of the effects of prenatal cocaine use on infants, the following sample data were obtained for weights at birth: n=190, x bar =2700g, s=645g. Use the sample data to construct a 95% confidence interval estimate of the standard deviation of all birth weights of infants born to mothers who used cocaine during pregnancy. Based on the result, does the standard deviation of 696g for birth weights of babies born to mothers who did not use cocaine during pregnancy?

Aug 01 2020 View more View Less

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