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November 20th, 2008, 05:20 PM  #1 
Newbie Joined: Nov 2008 From: houston, texas Posts: 2 Thanks: 0  statistics
hi all, someone please help me..... let x1,x2,.....xn be a random sample of size n from N(u, q^2=theta),o<theta<infinity, where u is known. show that y=(1/n)Ei=1(xiu)^2 is an unbiased estimator of theta. thank you for the help. 
November 21st, 2008, 02:43 PM  #2  
Global Moderator Joined: May 2007 Posts: 6,660 Thanks: 648  Re: statistics Quote:
 

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