Solved: In Example 6.8, we introduced the concept of a
Chapter 7, Problem 57E(choose chapter or problem)
Problem 57E
In Example 6.8, we introduced the concept of a censored experiment in which n components are put on test and the experiment terminates as soon as r of the components have failed. Suppose component lifetimes are independent, each having an exponential distribution with parameter λ. Let Y1 denote the time at which the first failure occurs, Y2 the time at which the second failure occurs, and so on, so that is the total accumulated lifetime at termination. Then it can be shown that 2 λTr has a chi-squared distribution with 2r df. Use this fact to develop a 100(1–α) CI formula for
true average lifetime 1/ λ. Compute a 95% CI from the data in Example 6.8.
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