A set of n =30 components are tested and their average
Chapter 17, Problem 17.3.1(choose chapter or problem)
A set of n =30 components are tested and their average lifetime is t =132.4 hours. (a) If the lifetimes are modeled with an exponential distribution, construct a 99% condence interval for the mean time to failure. (b) The components are advertised as having an average lifetime of at least 150 hours. Do you think that this is a plausible claim?
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