Astudy of the residents of a region showed that 20% were smokers. the probability of death due to lung cancer, given that a person smoked, was ten times the probability of death due to lung cancer, given that the person did not smoke. if the probability of death due to lung cancer in the region is .006, what is the probability of death due to lung cancer given that the person is a smoker

D: Death due to LC
S: Smokers
NS: Non-Smokers

P (D) = P (D|S).P (S) + (P D|NS) . P (S)
0,006 =  10a*0,2 + a*0,8
you've got  a

And substitute to P (D|S) = 10a

This is true. yes. indeed.

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases.