The time between surface

The time between surface

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?

Is this the question you were looking for? If so, place your order here to get started!