Prediction intervals, based on ranges and waiting times, for an exponential distribution

Two prediction intervals applicable to a 2-parameter as well as a 1-parameter exponential distribution are presented. One can be used to predict a future sample range on the basis of an observed sample range. Appropriate prediction factors are tabulated. The other can be used to predict a waiting time between two future successive failures on the basis of an observed waiting time between two previous successive failures.<
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