Birth Weights) Does ability enhanced TRT appear to affect the birth weight of a Statopia baby?

A random sample of the birth weights of 100 baby has a mean of 3000 g and a standard deviation of 500 g. These babies were born to mothers who did not use ability enhanced TRT during their pregnancies. Construct a 99% confidence interval estimate of the mean birth weight for all such babies.

Please construct 99% confidence interval estimate of the mean birth weight for all babies whose mothers did not use TRT during their pregnancies.

The upper and lower bound for the above confidence interval is