Question
A locomotive company makes engines with an average life of 30 years and a variance of 81 years. The distribution of lives is normal. What
A locomotive company makes engines with an average life of 30 years and a variance of 81 years. The distribution of lives is normal. What is the probability that an engine wont last at least 10 years?
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Calculus
Authors: Ron Larson, Bruce H. Edwards
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1285057090, 978-1285057095
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