7. A cohort study was conducted to find the association between place of residence (urban and rural) in a dened geographic region and chronic bronchitis. Among 2,413 residents in the urban areas, 194 were found to have developed chronic bronchitis, while among 1,277 residents in the rural areas, the number of those who developed chronic bronchitis was 69. 7.1. Develop a 2 by 2 table with the above data. Label the table clearly. (4 points) 7.2. Specify the measure of association. Then calculate it. Show all calculations. (2 points) The investigators then wanted to check, if a third variable (smoking) should be considered. Given below is the table that they created to check the role of smoking. Table 1: Relationship between Smoking, Place of Residence and Chronic Bronchitis m_ mama-mm mass... m 7.3. Specify and then calculate the appropriate measures of association. Show all calculations. (2 points) 7.4. What conclusion do you reach about the role of smoking in the relationship between place of residence and chronic bronchitis? Use appropriate terminology. Justify how you reached your conclusion. (2 points)