Here are summary statistics for randomly selected weights of newborngirls: n = 201, x= 30.8 hg, s= 7.1 hg. Construct a confidence interval estimate of the mean. Use a 90% confidnece level. Are therse resulsts very different from the confidence interval 30.2 hg < u <32.4 hg with only 19 sample values, x = 31.3 hb, and s=2.7 hg?

1.What is the confidenct interval for the population mean u?

? hg < u < ? hg

Round to one decimal place as needed

2.Are the results between the two conficene intervals very differnt?

a. no because the confidence interval limits are similar

b. yes, because the confidence interval limits are not similar.

c. no, because each confidence interval contains the mean of the other conficne intervla

d. yes, because one conficne interval does not contain the mean of the other confidence interval