Here are summary statistics for randomly selected weights of newborn​ girls: n=243, x=26.9 ​hg, s=7.6 hg. Construct a confidence interval estimate of the mean. Use a 90​% confidence level. Are these results very different from the confidence interval 25.9 hg<μ<28.7 hg with only 18 sample​ values, x=27.3 ​hg, and s=3.3 ​hg?