Mary was asked to describe this distribution about states West of the Mississippi. Below is what she has written so far. Distribution "Although the range of pupil-to-teacher ratios for the West is 10 units and can go as high as 22, it seems that a typical ratio is between 15 and 16. There do not seem to be any states with unusually high or low pupil-to-teacher ratios..." Mary is missing only ONE thing from her description. Complete her description below.