The length of time a domestic flight must wait between gate departure and takeoff taxi at BWI International Airport is approximately normally distributed with a mean of 22 minutes and a standard deviation of 7 minutes.
A) What is the probability that a plane must wait between 18 and 24 minutes before taxiing for takeoff after leaving the gate?
B)What is the probability a plane must wait between 22 and 30 minutes before taxiing for takeoff after leaving the gate
C) What is the probability a plane waits more than 12 minutes between gate departure and takeoff taxi?
D)What is the length of time such that only 5% of planes wait this long or longer before gate departure and taxiing to the runway?
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