Here are summary statistics for randomly selected weights of newborn girls: n=225, x=33.6hg, s=7.4 hg. Construct a confidence interval estimate of the mean. Use a 99% confidence level. Are these results very different from the confidence interval 31.6 hg< u < 36.0hg with only 17 sample values, x=33.8hg, and s=3.1hg?
What is the confidence interval for the population mean u?
Are the results between the two confidence intervals very different?