An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 150 lb and 191 lb. The new population of pilots has normally distributed weights with a mean of 157 lb and a standard deviation of 26.1 lb. A) If a pilot is randomly selected, find the probability that his weight is between 150 lb and 191 lb. B) If 39 different pilots are randomly selected, find the probability that their mean weight is between 150 lb and 191 lb. C) When redesigning the ejection seat which probability is more relevant

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