Answer the following questions regarding confidence intervals and alpha cutoff values:

As you must know, an alpha cutoff of 0.2 is unheard of. In which of the following circumstances would you accept such a high alpha due to high social cost of a false negative (despite the increase in likelihood of false positives due to high alpha)? Note: Wrong selection will result in 50% points deduction on this question. Please choose wisely. a. Hiring a fraudulent real estate agent l l 9' Diagnosis of engine failure Diagnosis of colon cancer I l P d. Convicting a person accused of shoplifting Detecting saltiness in seafood l l f\" A study concluded that the Relative Risk of lung cancer for people who smoke compared to people who do not smoke is 1.7 with a 95% CI of (1.2, 2.0). Which of the following statements is incorrect, based on this data alone? O a. The probability of lung cancer is lower for those who do not smoke. O b. People who smoke are at a higher risk of lung cancer compared to those who do not smoke. O c. Smoking causes lung cancer since RR is large and statistically significant 0 d. There is a significant association between lung cancer and smoking status 0 e. People who smoke are 1.7 times more likely to get lung cancer than those who do not smoke