Question 1161449
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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(cross(is))}}} delivered to consulting firm needs a tune up, what is the probability that it comes from agency 2
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<pre>
    P = {{{(0.3*0.2)/(0.6*0.09 + 0.3*0.2 + 0.1*0.06)}}} = 0.5.     <U>ANSWER</U>
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