A statistics student has calculated the following summary statistics for a regression line calculation. n =...

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A statistics student has calculated the following summary statistics for a regression line calculation. n = 5, Σ x = 30, Σ y = 40, Σ xy = 321, Σ x2 = 260, Σ y2 = 438 (a) Find the correlation coefficient. (b) Find the regression line. (c) The annual salary of a profession A has a mean of $72,000 with a standard deviation of $12,000. The annual salary of a profession B has a mean of $65,000 with a standard deviation of $8,000. Which profession has greater spread relative to its mean? A statistics student has calculated the following summary statistics for a regression line calculation. n = 5, Σ x = 30, Σ y = 40, Σ xy = 321, Σ x2 = 260, Σ y2 = 438 (a) Find the correlation coefficient. (b) Find the regression line. (c) The annual salary of a profession A has a mean of $72,000 with a standard deviation of $12,000. The annual salary of a profession B has a mean of $65,000 with a standard deviation of $8,000. Which profession has greater spread relative to its mean?