solution please
QJf Q If 2₁, ²₂., an is a random sample from a pop with mean u and variance 2 S.T Exi = OT= not an but is mean - x₁+x₂+---+*nis ntl eff 100 estimatos of u than sample nottopy 10 RIGH R ntl unbiased more 17 7 8 8 1
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