Question
Random variables $X$ and $Y$ are mutually dependent variables. Following data is collected from a random sample of $10$ observations: $\Sigma x=360: \Sigma y=450 ; \operatorname{Cov}(x, y)=90 ; S_{x}=9, S_{y}=12$
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Answer
$\hat{y}=84.96-1.11 x$
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