Questions 6-9. The following data are from a case-control study of lung cancer and smoking exposure among industrial insulation workers, overall within the stratum of high levels asbestos exposure level. Overall (n=400) Smoking status Cases Controls Current or Former 121 56 Never 82 141 Startum of high asbestos exposure (n=210) Smoking status Cases Controls Current or Former 73 40 Never 30 67 Stratum of no to low asbestos exposure (n=190) Smoking status Cases Controls Current or Former Never Question 6 (a & b): a. Fill in the table for no to low asbestos exposure b. What is the overall measure of association (odds ratio)