Here are summary statistics for randomly selected weights ofnewborn​ girls:
nequals=221
x overbar x=28.8
​hg,
s=7.9
hg. Construct a confidence interval estimate of the mean. Usea
99%
confidence level. Are these results very different from theconfidence interval
25.0
hg less thanhg with only
12
sample​ values,
x overbarxequals=28.2
​hg, and
sequals=3.6
​hg?
What is the confidence interval for the population mean
muμ​?
nothing
hgless thanhg ​(Round to one decimal place as​ needed.)
Are the results between the two confidence intervals very​different?
A.
​No, because the confidence interval limits are similar.
B.
​Yes, because the confidence interval limits are notsimilar.
C.
​No, because each confidence interval contains the mean of theother confidence interval.
D.
​Yes, because one confidence interval does not contain the meanof the other confidence interval.
