Problem 3. Past maintenance record shows that the probably for a well to shutdown unexpectedly (event A) is 10%, or P(A) = 0.10. Once a well is shutdown (A is true), the probability for the well to come back on production within 24 hours (event B) is 35%, or P(B|A) = 0.35. Calculate the probability that a well is shutdown unexpectedly and it comes back on production a. within 24 hours, P(B). (5 points) b. after 24 hours, P(B) ( 5 points)