SOLUTION: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 150 lb and 201 lb. The new population of pilots has normally di
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Question 1112979: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 150 lb and 201 lb. The new population of pilots has normally distributed weights with a mean of 159 lb and a standard deviation of 30.2 lb. If a pilot is randomly selected, find the probability that his weight is between 150 lb and 201 lb.
You can put this solution on YOUR website! z=(x-mean)/sd
two z s are needed
z1=(150-159)/30.2=-9/30.2=-0.298
z2=(201-159)/30.2=42/30.2=+1.39
probability z is between them is 0.5349
