Question: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lbs and 191 1b.

An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lbs and 191 1b. The new population of pilots has normally distributed weights with a mean of 136 lb and a standard deviation of 27.6 1b. a) If a pilot is randomly selected, find the probability that his weight is between 130 lb and 191 1b. b) If 30 different pilots are randomly selected, find the probability that their mean weight is between 130 lb and 191 1b

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