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A scooter factory runs two assembly lines, A and B. 97.4% of line A’s scooters pass instruction, while only 94.9% of line B’s scooters pass inspection. 65% of the factory’s scooters come off assembly line A.

a) What is the probability that a randomly selected scooter did not pass inspection?
b) What is the probability that if a randomly selected scooter passes inspection, it came from
assembly line B?

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