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Standardize a (and/or b) to a z -score using the z -formula: Look up the z -score on the Z -table (see below) and find its corresponding probability. a. Find the row of the table
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We can use the formula to find the chances of an event happening. Formula to Calculate Probability The formula of the probability of an event is: Probability Formula Or, Where, P (A) is
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Probability of drawing a blue and then black marble using the probabilities calculated above: 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
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