Probability Calculation for Myocardial Infarction Assume that the risk of myocardial infarction during the next year in a 60-year-old man is 20% but is reduced by half if the man exercises regularly ...

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Probability Calculation for Myocardial Infarction
Assume that the risk of myocardial infarction during the next year in a 60-year-old man is 20% but is reduced by half if the man exercises regularly. Assume as well that the risk of the same event in the man's 58-year-old wife is 14% but is reduced by half if she uses antihypertensive treatment. What is the probability that neither husband nor wife will experience a myocardial infarction during the next year if the events are independent, and the husband exercises but the wife is unwil