Answer Happy

The event tree for a (fictitious) safety system that recovers from a an initiating event. The possible outcomes are: . Success outcome • Failure outcome Given the Event Tree below and the values associated with each event, what is the probability that there outcome is a failure after the initiating event has occurred? Give the answer to 4 decimal places. Event Probability of "Failure" Event 1 0.056 Event 2 0.013 Event 3 0.002 Event 4 0.060 Initiating Event Events Event 2 Event 3 Event 4 Outcome Success Success Outcome Success Success Failure Outcome Failure Success Success Outcome Failure Failure Initiating event Failure Failure Outcome Failure Failure Outcome Success Success Outrome Success Outcome