Sufficient Statistics Homework Statement and Solution

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abeliando
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Homework Statement


Problem is in the attachment, sorry, I can't figure out how to do tex in this message board system.


Homework Equations





The Attempt at a Solution


In the attachment.
 

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I think you're into too much math. The I(.) function, if I get its meaning correctly, is nothing but to indicate that it is impossible to sample [itex]x\leq\mu[/itex]. With frequentists' approach, this means a lot: you can safely ignore the bunch of I(.)'s and consider only those samples greater than [itex]\mu[/itex]. This should solve the problem :wink:
 
abeliando said:

Homework Statement


Problem is in the attachment, sorry, I can't figure out how to do tex in this message board system.


Homework Equations





The Attempt at a Solution


In the attachment.

Ignoring the fancy notation, what you have for given, fixed μ is that Y = X-μ is exponentially distributed with unknown mean, and you are trying to estimate that mean. You are being asked to show some property of the "usual" estimate.