Background info: Beckham et al.(2010) reported data on the amplification of the atf gene in cells heated due to laser surgery or not. They report Cp values (the number cycles of amplification before crossing a background threshold) for cells from 10 patients exposed to laser surgery and from 10 patients not exposed to laser surgery.

Question: Test the hypothesis( using parametric test and non parametric test) that exposure to heat associated with laser surgery has no effect on expression of the atf gene. ***State your null and alternative hypothesis, perform and report the details of the test, and interpret the results.**

	treat	atfCp
1	nolaser	25.1194
2	nolaser	21.54163
3	nolaser	19.12919
4	nolaser	21.61403
5	nolaser	15.87286
6	nolaser	20.16326
7	nolaser	22.1332
8	nolaser	23.29019
9	nolaser	25.45543
10	nolaser	19.93131
11	laser	30.3056
12	laser	21.38996
13	laser	22.8042
14	laser	27.6685
15	laser	24.3891
16	laser	31.40973
17	laser	35.48917
18	laser	15.08844
19	laser	27.92684
20	laser	24.73593