An engineer is going to redesign an ejection seat for airplane. The seat was designed for the pilots weighing between 140lb and 201lb. The new population of pilots has normally distributed weights with mean of 149lb and standard deviation of 26.5lb.
A) If the pilot is randomly chooses, determine the probability that his weight is between 140lb and 201 lb.
B) If 33 different pilots are randomly selected, find the probability that their mean weight is between 140lb and 201 lb.