A public health screening survey provided the following data on the relationship between smoking and lung cancer. Determine the strength of the association between smoking and lung cancer by computing the relative risk of a smoker developing cancer. Calculate the 95% confidence interval around the relative risk to determine statistical significance. Is it significant?Data:Smoking status Lung cancer Total Present AbsentNon smoker 1 6700 6701smoker 20 3279 3299 Total 21 9979 10000