Question

How does level of affluence affect health care? To address one dimension of the problem, a group of heart attack victims was selected. Each was categorized as a low-, medium-, or high-income earner. Each was also categorized as having survived or died. A demographer notes that in our society 21% fall into the low-income group, 49% are in the medium- income group, and 30% are in the high-income group. Furthermore, an analysis of heart attack vic- tims reveals that 12% of low-income people, 9% of medium-income people, and 7% of high-income people die of heart attacks. Find the probability that a survivor of a heart attack is in the low-income group. solve showing probability trees

Answer 1

The probability tree is given by:

We need to find the probability that a survivor of a heart attack is in the low-income group

P(Low-Income Group/Survivor)

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