Thank you for your reply, it has been helpful.

Do you know if the parameters estimators are MLE estimators?

One more question:
In my case study I have failures that occured on different objects that have
different age and length, could I use weight to find the estimates of a
weibull law and so to find the probabilty of failure per unit of length for
example?


Thank you very much again for your help,

Boris

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