Here are summary statistics for randomly selected weights of newborn girls: n= 236, x= 30.9 hg, s=6.9 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 29.9 hg < u < 32.7 hg with only 15 sample values, ×= 31.3 hg, and s = 2.5 hg?

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Here are summary statistics for randomly selected weights of newborn girls: n= 236, x= 30.9 hg, s=6.9 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these results very different from the confidence interval 29.9 hg < u < 32.7 hg with only 15 sample values, ×= 31.3 hg, and s = 2.5 hg?
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