From long-term observation, it is known that the waiting-time for non-ambulance adult arrivals in a hospital's A&E has a mean of 120 minutes and a standard deviation of 50 minutes. On a given day, there are 200 such arrivals. What is the probability that the daily mean waiting time for arrivals exceeds 125 minutes? O 0.5398 0.9214 O 0.0786 O0.4602

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