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An engineer is going to redesign an ejection seat for an airplane. The seat was designed...

An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 120 lb and 161 lb. The new population of pilots has normally distributed weights with a mean of 126 lb and a standard deviation of 32.8 lb.

Math   Statistics-And-Probability   
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Answer #1

Let "X" be the weight of pilots.

Note: P(a<Z<b) =P(Z<b)-P(Z<a)

Refer Standard normal table/Z-table to find the probability or use excel formula "=NORM.S.DIST(1.0671, TRUE)" & "=NORM.S.DIST(-0.1829, TRUE)" to find the probability.

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