probability_review_worksheet_3.pdf

# The person got the flu given that the person was

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the person got the flu, given that the person was vaccinated c. the person did not get the flu, given that the person was not vaccinated d. the person was vaccinated, given that the person go the flu 4. Two employees on a college campus, Brian from Operations and Beth from Safety, are assigned to check that a certain building on campus is locked over the weekend. Suppose that on any weekend the probability that Brain checks the building is 0.96, that Beth checks the building is 0.98, and that they both check is 0.95. What is the probability that neither Brian nor Beth check on a weekend? 5. A petroleum company exploring for oil has decided to drill two wells, one after the other. The probability of striking oil in the first well is 0.2. Given that the first attempt is successful, the probability of striking oil on the second attempt is 0.8. What is the probability of striking oil in both wells?

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6. It is known that the probability that a light bulb will last beyond 100 hours is 0.7 and the probability that it will last beyond 150 hours is 0.28. Given that the bulb lasts beyond 100 hours, find the probability that it will last beyond 150 hours.
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