Here are summary statistics for randomly selected weights of newborn girls: n=227, x= 31.7 hg, s= 7.9 hg. Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 29.7 hg<µ<33.9 hg with only 20 sample values, x= 31.8 hg, and s= 3.7 hg? What is the confidence interval for the population mean μ? |hg<µ

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