The following is a stem plot of the birth weights of 27 male born to a group of mothers who smoked during pregnancy. The stems are in units of kg and birthweights range from 2.3 to 5.6 kg. Use these data to answer the question below the plot. Stem Leaves 2 3,4,6,7,7,8,8,8,9,9 3 2,2,3,4,6,7,8,9 4 1,2,2,3,4 3,5,5,6 What is the median birth weight? 3.2 kg O 2.9 kg 2.7 kg 3.4 kg