The data below is from a Case-Control study done in Ethiopia to determine risk factors associated with Tuberculosis. People with Tuberculosis were found (Cases) and compared to similar people without Tuberculosis (Controls). Smoker Non-smokerCase 42 218 Control 15 2451. Using 1% significance, would you conclude that the proportion of those with Tuberculosis who smoke is different than those without Tuberculosis who smoke? 2. From this data can you estimate the risk of developing Tuberculosis for a smoker, that is P(Tuberculosis | Smoker)? If no explain why, if yes what is the risk?

Mycobacterium tuberculosis is the bacteria that causes tuberculosis (TB). TB germs often attack the lungs, but they can attack any region of the body, including the kidney, spine, and brain.

When an infected individual coughs or sneezes, the germs that cause tuberculosis spread. The majority of people who are infected with the germs that cause tuberculosis do not show symptoms. When symptoms do appear, they are typically accompanied by a cough (sometimes blood-tinged), weight loss, night sweats, and fever.

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