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Here are summary statistics for randomly selected weights of newborn girls: n = 150, x = 30.7 bg, s = 7.1 hg. Construct a confidence

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Here are summary statistics for randomly selected weights of newborn girls: n = 150, x = 30.7 bg, s = 7.1 hg. Construct a confidence interval estimate of the mean. Use a 90% confidence level. Are these results very different from the confidence interval 29.6 hg

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