The probability that a bulb picked at random from a batch is defective is 0.08. What is the probability that a bulb picked at random from the batch is not defective?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 0.92
A bulb is either defective or not defective, and never both, so the two probabilities add up to 1: P(not defective) = 1 − P(defective).
P(defective) \(=0.08\)
P(not defective) \(=1-0.08=0.92\)