Question: Q 4 Suppose 2 = 0 = > y i = 1 + u i , i = 1 , 2 , dots, n .

Q4 Suppose 2=0=>yi=1+ui,i=1,2,dots,n. The ui are IID(0,2).
(a) derive the estimate of 1 and called it widehat()1
(b) derive the variance of widehat()1
Q 4 Suppose 2 = 0 = > y i = 1 + u i , i = 1 , 2 ,

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