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

n=155,

x=26.6

hg,

s=7.1

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

99%

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

24.1

hg<<28.1

hg with only

16

sample values,

x=26.1

hg, and

s=2.7

hg?

What is the confidence interval for the population mean

?