Question
The effective life of a component used in a jet-turbine aircraft engine is a random variable with mean 5000 hours and standard deviation 40 hours.
The effective life of a component used in a jet-turbine aircraft engine is a random variable with mean 5000 hours and standard deviation 40 hours. The distribution of effective life is fairly close to a normal distribution. Suppose historical data on 50 components is pulled.
What is the probability that the average life of these components was between 4970 and 5030 hours?
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Fundamentals Of Matrix Analysis With Applications
Authors: Edward Barry Saff, Arthur David Snider
1st Edition
111895369X, 9781118953693
