Here are summary statistics for randomly selected weights of newborn​ girls: n=218​, x=30.4 ​hg, s=7.3 hg. Construct a confidence interval estimate of the mean. Use a 99​% confidence level. Are these results very different from the confidence interval 28.5 hg<μ<32.9 hg with only 17 sample​ values, x=30.7 ​hg, and s=3.1 ​hg?       What is the confidence interval for the population mean μ​?   (?)hg<μ<(?)hg ​(Round to one decimal place as​ needed.) Are the results between the two confidence intervals very​ different?

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