I am very unsure of these. I am doing this wrong because nothing I do is any of the options to choose from.

Car Fails Computer System Fails Fuel Steering Brake System System System Fails Fails Fails Figure 1. Car Systems Simple Fault Tree What is the probability of the Car Systems in Figure 1 AND gate being true, given the following basic event probabilities: Computer System Fails - 20% Fuel System Fails - 30% Steering System Fails - 40% Brake System Fails - 50% O 21% O 2% O 12% O 6%A lung doctor wishes to utilize Bayes' Theorem to calculate the probability of their existing patients having lung cancer if they are smokers. . 40% of the existing patients already have lung disease 50% of the existing patients are smokers . 60% of the existing patients with lung disease are smokers If the doctor's existing patients are smokers, what is the probability they could have lung cancer? O 33.33% O 30% 75% O 48%