Question

Calculate the probability that a flight will depart early or on-time. P(flight early/on time DEPP)=(#flights early/on time)/(total # flights)=363/500= 0.726
Calculate the probability that a flight will arrive late. P(Late ARR)=(#flights late)/(total # flights)=170/500= 0.34
Calculate the probability that a flight departs late or arrives early (does not say on time). P(Late/early DEPP)=(#flights Late+ early)/(total # flights)=428/500= 0.856

If the above is correct, Assume now that the random variable X=Arrival Time is exactly normally distributed with mean m= -2.5 and standard deviation s= 23. Compute the probability of a flight arriving late based on this new information. Does this contradict your answer from Part 8(Calculate the probability that a flight will arrive late 0.34)? Please explain this part. I don't understand.

negatives are early departures and arrivals

I am unable to post the samples (table) with the question because my question would be too long, but the samples (Tables) are the same as other questions asked.

Answer 1