Please provide step by step explanations and final answers.

3. A researcher is interested in the relationship between periodontal disease and hypertension among patients visiting his hospital. In order to address this relationship, the researcher actively recruits patients from his record database to take part in an investigational study looking at the relationship between periodontal disease as an exposure and hypertension as the outcome of interest. The researcher successfully enrolls 614 patients, and follows them for a period of 1 year to ascertain incident cases of hypertension. However, during the analysis phase, the researcher is concerned about the racial disparity in his outcome. The researcher organizes the following RxC table to display the difference in hypertension by race. Hypertension No Hypertension Total African American 69 94 163 Caucasian 41 143 184 Asian American 51 77 128 Hispanic American 66 73 139 Total 227 387 614 A) What type of study is being conducted here? B) Conduct a formal test to determine if there is a signicant difference in the outcome between the various racial groups. Write out your null and alternative hypothesis, and interpret your results at 95% condence. C) Calculate the appropriate risk measure for each racial group using the \"Caucasian\" category as the reference group. D) Using your results in B and C, discuss the relationship between race and hypertension in the study