Here are summary statistics for randomly selected weights of newborn​ girls: n=157​, x=29.4 ​hg, s=6.7 Construct a confidence interval estimate of the mean. Use a 95​% confidence level. Are these...

Here are summary statistics for randomly selected weights of newborn​ girls:

n=157​,

x=29.4

​hg,

s=6.7

1. Construct a confidence interval estimate of the mean. Use a

95​%

confidence level. Are these results very different from the confidence interval

28.8

hg<><>

hg with only

20

sample​ values,

x=29.9

​hg, and

s=2.4

​hg?

What is the confidence interval for the population mean

μ​?

nothing

hg<><>

hg ​(Round to one decimal place as​ needed.)