( please solve the question using R code and please provide the code)

4.Using the birthwt data set, find the point estimate and the 90% confidence interval estimate for the population mean of the number of physician visits during the first trimester.

5. Using the "BodyTemperature.txt" data set, find the point estimate and the 80% confidence interval estimate for the population means of heart rate and normal body temperature.

Datasets

https://www.ics.uci.edu/~babaks/BWR/Home.html

https://www.ics.uci.edu/~babaks/BWR/Home_files/birthwt.txt

https://www.ics.uci.edu/~babaks/BWR/Home_files/BodyTemperature.txt