Question: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 lb and 191 lb.

An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 lb and 191 lb. The new population of pilots has normally distributed weights with a mean of 147lb and a standard deviation of 29.5lb.

If a pilot is randomlyselected, find the probability that his weight is between 140 lb and 191 lb.

The probability is approximately:

. (Round to four decimal places asneeded.)

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