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The output of a ninth regression analysis on the effect of advertising spending on sales is given below. Regression Analysis: Sales versus Spend Regression Equation

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The output of a ninth regression analysis on the effect of advertising spending on sales is given below. Regression Analysis: Sales versus Spend Regression Equation Sales = -2.00 + 10.878 Spend Coefficients Term Coef SE Coef T-Value P-Value Constant -2.00 4.07 -0.49 0.634 Spend 10.878 0.526 20.67 0.000 Model Summary S R-sq R-sq(adj) R-sq(pred) 7.49437 97.91% 97.48% 97.00% What is the correlation coefficient

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