An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 Ib and 191 lb. The new population of pilots has normally distributed weights...

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Extracted text: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 Ib and 191 lb. The new population of pilots has normally distributed weights with a mean of 136 ib and a standard deviation of 33.9 lb. Click here to view page 1 of the standard nomal distribution. Click here to view page 2 of the standard nommal distribution. a. If a pilot is randomly selected, find the probability that his weight is between 130 lb and 191 Ib. The probability is approximately 0.5178 . (Round to four decimal places as needed.) b. If 39 different pilots are randomly selected, find the probability that their mean weight is between 130 lb and 191 lb. The probability is approximately U (Round to four decimal places as needed.)