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Unformatted text preview: B (being 70 years of age or older). Because women number 20 out of the 25 people in the 70-or-older group, the probability of this latter question is , or 0.80. Conditional probability is found using this formula: which is read: The probability of A given B equals the probability of A and B divided by the probability of B . The vertical bar in the expression A|B is read given that or given ....
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- Fall '08