# Estimation of the percentile 0.9.

by Lucy   Last Updated June 30, 2020 03:20 AM - source

Let $$X_{1},...,X_{n}$$ be independent random variables with exponential distribution of parameter $$\lambda$$.

The task is to find the maximum likelihood estimator and the first moment estimator of the percentile 0.9.

How can I do that? I know how to calculate those estimations of $$\lambda$$ , are they necessary?.

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