3. In the past 10 years, some scientists have claimed that water flossing is equivalent or better than standard flossing for removing plaque growth and preventing tooth decay. A study was done to assess this claim and results showing net change in decay area are shown in flossComparison. csv (a) Perform a hypothesis test to determine if their is strong evidence for the claim that there water flossing is superior to regular flossing o = 0.05 level. (b) Which method seemed to do worse (have a higher decay area?. Support your answer with graphs or summary statistics. (c) Report your t-test results in APA format. (d) Comment on whether or not your assumptions required for the test part a seem to be met. (e) Bonus: Perform a similar hypothesis test as in a), but this time conduct as though the nomality assumption were strongly violated