Problem 7 Design a heart attack Bayesian network which can be used to predict the impact of changes in lifestyle (e.g., smoking, exercise, weight control) on the probability of premature death due to heart attack. You will have to make various choices about the resolution of your variables, for example, whether to model years or decades of life lost due to heart attack. Such choices may be guided by what data you are able to find for parameterizing your network. In any case, do the best you can within the time frame for the problem. Then use your network to perform a few case studies.

Estimate the expected number of years lost from heart attack. Then model one or more lifestyle changes and re-estimate.