Researchers randomly assign cancer patients to either a control group that received weekly sessions of group therapy, to see whether the therapy treatment improved the patients' life. The observations below represent the number of months of survival after beginning the study:

Control | 2 10 12 14 16 18 30 30 34 40

Group therapy | 2 04 10 16 38 44 44 48 58 66

Here are the summary statistics:

Treatment | min Q1 median Q3 max mean sd n missing

Control | 2 12.5 17 30 40 20.6 12.1856 10 0

Therapy | 2 11.5 41 47 66 33 23.15647 10 0

Does the data present sufficient evidence to indicate a difference between the control and therapy treatment processes at an =0.05 level of significance?

A) Answer the question using a parametric method.

B) Answer the question using a non-parametric method.

Note: There is no missing data.