Posted: January 24th, 2017

You would construct two histograms (one for the total practice cost for Invisalign and one for the traditional treatment patient group)

You would construct two histograms (one for the total practice cost for Invisalign and one for the traditional treatment patient group)  your hypothesis test would also focus on the difference between these two groups- looking at the mean cost for the two groups and the hypo test for the difference between the means.