Essay
Messenger Service
Three messenger services deliver to a small town in Oregon.Service A has 60% of all the scheduled deliveries,service B has 30%,and service C has the remaining 10%.Their on-time rates are 80%,60%,and 40% respectively.Define event O as a service delivers a package on time.
-{Messenger Service Narrative} If a package was delivered on time,what is the probability that it was service A?
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