On Canvas, you will find a file surgery.csv. It contains information on recovery time (in days) for a traditional surgery (the old group), and a new surgery (the new group). (a) Plot the distribution of recovery time in days for both groups. Does your distribution look skewed, or symmetric? Explain. 1 (b) State the null and alternative for testing to see if there is a difference in average recovery time between the two surgeries. (c) Find the approximate and exact p-values for your hypothesis, using R. You may use either WRS, or the permutation test. (d) State the conclusion in terms of the problem if = 0.05.

Times	Group
12	New
13	New
15	New
19	New
20	New
21	New
27	New
18	Old
23	Old
24	Old
30	Old
32	Old
35	Old
40	Old