# 5. (Chapter 9.4, 9.5, 20 pt.) Y1, ..., Y. is a normally distributed random sample with...

###### Question:

5. (Chapter 9.4, 9.5, 20 pt.) Y1, ..., Y. is a normally distributed random sample with mean y and variance o. (a) If u is known and o’ is unknown, show that (Y, - x)' is sufficient for o”. (b) Find an MVUE for o? using (a).

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