Answer:
Because the probabilities of success of the three alarms are 80%, 70%, and 60%, the probabilities of failure are 20%, 30%, and 40%, respectively. Multiply the three probabilities to find the probability of a system failure: 0.2 × 0.3 × 0.4 = 0.024. The probability of a system failure in this example is 2.4%.
Step-by-step explanation:
