Question: Please answer 1 through 3. 1. If the odds in favor of an event are 4 to 7, what is the probability that the event

Please answer 1 through 3.

1. If the odds in favor of an event are 4 to 7, what is the probability that the event will NOT occur 2. Let A and B be events such that Pr(A) = 0.6, Pr(B) = 0.5, and Pr(A B) = 0.4. Compute Pr(A U B). 3. An auto mechanic uses a two-step procedure to determine the problem with a faulty engine. Step I finds the problem with probability 0.7. Step II (which is executed only if step I fails to locate the problem) locates the problem with probability 0.5. (a) Draw a tree diagram representing the sequence of steps and label it with the appropriate probabilities. (b) What is the probability of this procedure locating the problem in a given faulty engine

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