Suppose that two electronic components in the guidance system for a missile operate
Chapter 6, Problem 6.11(choose chapter or problem)
Suppose that two electronic components in the guidance system for a missile operate independently and that each has a length of life governed by the exponential distribution with mean 1 (with measurements in hundreds of hours). Find the a probability density function for the average length of life of the two components. b mean and variance of this average, using the answer in part (a). Check your answer by computing the mean and variance, using Theorem 5.12.
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