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Here are summary statistics for randomly selected weights of newborn girls: n=227, x=27.8 hg, s=7.6 hg. Construct a confidence interval estimate of the mean.

Here are summary statistics for randomly selected weights of newborn girls: n=227, x=27.8 hg, s=7.6 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 25.2 hg <

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