Question: The probability of A is 0.5.The conditional probability that A occurs given that B occurs is 0.25. The conditional probability that B occurs given that

The probability of A is 0.5.The conditional probability that A occurs given that B occurs is 0.25. The conditional probability that B occurs given that A occurs is 0.2.
a. What is the probability that B occurs?
b. What is the conditional probability that B does not occur given that A does not occur?

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