Find p(a or b)

To compute for P (A or B), four essential parameters are needed and these parameters are xA, NA, xB and NB. The formula for calculating P (A

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Probability of A or B (1 of 3)

P (A ∩ B) = P (A) × P (B|A) = (3/10) × (7/9) = 0.2333 Union of A and B In probability, the union of events, P (A U B), essentially involves the condition where any or all of the events being considered occur, shown in the Venn diagram

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Algebra Examples

If A and B are independent, then the formula we use to calculate P (A∩B) is simply: Independent Events: P (A∩B) = P (A) * P (B) If A and B are dependent, then the formula we use

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12 How to Calculate the Probability of Independent Events P

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