R markdown

This problem uses the the birthwt data from the MASS package in R. The variable low is a 0/1 indicator for low birth weight (below 2.5 kg).

(a). Use R to make a frequency table for low birthweight (low==1) versus normal birthweight (low==0).

(b). Make a relative frequency table for low versus normal birthweight.

(c). Make a barplot of the relative frequencies of low versus normal birthweight.