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By rewriting the formula for the multiplication rule you can write a formula for finding conditional probabilities. The conditional probability of event B occurring, given that event A has occurred is P(B A)= P(A and B) P(A) Use the information below to find the probability that a flight departed on time given that it arrives on time The probability that an airplane flight departs on time is 0 89 The probability that a flight arrives on time is 0.87 The probability that a flight departs and arrives on time is 0 82 The probability that a flight departed on time given that it arrives on time is (Round to the nearest thousandth as needed