Question 1076573:  Please help me solve problem.
 
Three airlines serve International airport. Airline A has 60% of all the scheduled flights, airline B has 30% and airline C has the remainder. Their on-time rates are 80%, 60% and 40% respectively. Define the event O as "an airline arrives on time". 
If a plane has just left on time, what is the probability that it was airline C? 
 
 Answer by stanbon(75887)      (Show Source): 
You can  put this solution on YOUR website! lease help me solve problem.  
Three airlines serve International airport. Airline A has 60% of all the scheduled flights, airline B has 30% and airline C has the remainder.  
Their on-time rates are 80%, 60% and 40% respectively. Define the event O as "an airline arrives on time". 
P(an airline arrives on time) = 0.8*0.6+0.6*0.3+0+0.4*0.1 = 0.7 
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If a plane has just left on time, what is the probability that it was airline C? 
P(C on time | an airplane on time)= P(Contime AND aplaneontime)/P(a plane on time) 
= (0.4*0.1)/0.7 = 0.057 
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Cheers, 
Stan H. 
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