SOLUTION: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 lb and 181 lb. The new population of pilots has normally di
Algebra ->
Probability-and-statistics
-> SOLUTION: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 lb and 181 lb. The new population of pilots has normally di
Log On
Question 1132104: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 lb and 181 lb. The new population of pilots has normally distributed weights with a mean of 149 lb and a standard deviation of 25.1 lb.
a. If a pilot is randomly selected, find the probability that his weight is between 140 lb and 181 lb. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! z=(x-mean)/sd
=(140-149)/25.1 and (181-149)/25.1
between -0.36 and +1.27
probability is 0.5385
