Q1Section I (Objective (Q1–Q80))1 of 80
Probability — unconditional probability across three sources
The members of a firm rent cars from three rental agencies: 60% from Agency-1, 30% from Agency-2 and 10% from Agency-3. If 9% of cars from Agency-1 need an oil change, 20% of cars from Agency-2 need an oil change and 6% of cars from Agency-3 need an oil change, then what is the probability that a rental car delivered to the firm will need an oil change?
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