Given the information in Problems 41-44, find the equation for the least squares line as well as

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Given the information in Problems 41-44, find the equation for the least squares line as well as the correlation coefficient.

\(n=10, \Sigma x=30, \Sigma y=20, \Sigma x y=60, \Sigma x^{2}=90, \Sigma y^{2}=40\)

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