The survival times (in months) for 30 patients with severe chronic left-ventricular heart failure are shown below:
Standard Therapy New Therapy
4 15 24 10 1 27 31 5 20 29 15 7 32 36
14 2 16 32 7 13 36 17 15 19 35 10 16 39
29 6 12 18 14 15 18 27 14 10 16 12 13 16
6 13 21 20 8 3 24 8 9 18 33 30 29 31 27
Construct separate relative frequency histograms for the survival times of both the therapies
