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Bad gums may mean a bad heart. Researchers discovered that 77% of people who have suffered...

Bad gums may mean a bad heart. Researchers discovered that 77% of people who have suffered a heart attack had periodontal disease, an inflammation of the gums. Only 32% of healthy people have this disease. Suppose that in a certain community heart attacks are quite rare, occurring with only 14% probability. A. If someone has periodontal disease, what is the probability that he or she will have a heart attack? Probability = .4375 B. If 43% of the people in a community will have a heart attack, what is the probability that a person with periodontal disease will have a heart attack?

math   Statistics-And-Probability   
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