Chronic obstructive heart disease (COPD) blocks airflow and makes breathing difficult. Smokers are at risk of developing some form of COPD, including...

Chronic obstructive heart disease (COPD) blocks airflow and makes breathing difficult. Smokers are at risk of developing some form of COPD, including chronic bronchitis and emphysema. Studies show there were 64 million people living with COPD in 2004. Given a sample of men, assume that the father has COPD in 30% of participants; the son has COPD in 20% of participants; and both the father and the son have COPD in 6% of participants. What is the conditional probability that the son has chronic obstructive heart disease given that the father has chronic obstructive heart disease?
a. 0.02 b. 0.20 c. 0.03 d. 0.30 e. 0.06