\( x \) and \( y \) are correlated variables. Ten observations of values of \( (x, y) \) have th...

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\( x \) and \( y \) are correlated variables. Ten observations of values of \( (x, y) \) have the results :
\[
\Sigma x=55, \Sigma y=55, \Sigma x y=350, \Sigma x^{2}=385
\]
Predict the value of \( y \) when the value of \( x \) is 6.
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