SOLUTION: the members of a consulting firm rent cars from three rental agencies 60% from agency 1 30% from agency 2 and 10% from agency 3 if 9% of the cars from agency 1 needs a tune up, 20%

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Question 1161449: the members of a consulting firm rent cars from three rental agencies 60% from agency 1 30% from agency 2 and 10% from agency 3 if 9% of the cars from agency 1 needs a tune up, 20% of the cars from agency 2 and 6% of the cars from agency 3 need a tune up. If a rental car is delivered to consulting firm needs a tune up, what is the probability that it comes from agency 2
Answer by ikleyn(52781) About Me  (Show Source):
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the members of a consulting firm rent cars from three rental agencies 60% from agency 1 30% from agency 2 and 10% from agency 3.
if 9% of the cars from agency 1 needs a tune up, 20% of the cars from agency 2 and 6% of the cars from agency 3 need a tune up.
If a rental car highlight%28cross%28is%29%29 delivered to consulting firm needs a tune up, what is the probability that it comes from agency 2
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    P = %280.3%2A0.2%29%2F%280.6%2A0.09+%2B+0.3%2A0.2+%2B+0.1%2A0.06%29 = 0.5.     ANSWER