Solved: The time between surface finish problems in a galvanizing process is
Chapter 5, Problem 5-52(choose chapter or problem)
The time between surface finish problems in a galvanizing process is exponentially distributed with a mean of 40 hours. A single plant operates three galvanizing lines that are assumed to operate independently. (a) What is the probability that none of the lines experiences a surface finish problem in 40 hours of operation? (b) What is the probability that all three lines experience a surface finish problem between 20 and 40 hours of operation? (c) Why is the joint probability density function not needed to answer the previous questions?
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