Here are summary statistics for randomly selected weights of newborn girls: n=217, x=31.7hg, s=6.5hg. Construct a confidence interval estimate of the mean. Use a 98% confidence level. Are these results very different from the confidence interval 29.6hg< u < 32.6hg with only 17 sample values, x=31.1hg, and s=2.4hg?
What is the confidence interval for the population mean ?
hg < u < hg
(Round to one decimal place as needed.)
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