The results of a 10-year cohort study of smoking and coronary heart disease (CHD) are shown

Outcome after 10-years
At beginning of study CHD developed CHD not developed
2,000 Healthy smokers 65 1,935
4,000 Healthy non-smokers 20 3,980

Question 6.1 and 6.2 refer to the following information:
6.1. The incidence of CHD in smokers that can be attributed to smoking is:_________
6.2. The proportion of the total incidence of CHD in smokers that is attributable to smoking is: __