An economist is studying the job market in Denver area neighborhoods. Let x represent the total number of jobs in a given neighborhood, and let y represent the number of entry-level jobs in the same neighborhood. A sample of six Denver neighborhoods gave the following Information (units in hundreds of jobs). X 15 30 50 28 50 25 decimal places.) (b) Verify the given sums Ex, Zy, Ex2, Zy?, Exy, and the value of the sample correlation coefficient r. (Round your value for r to four Xx = Ey Ex Ev Exy (c) Find x, and y. Then find the equation of the least-squares line ? = a + bx. (Round your answers to four decimal places.) 1 X1 y (e) Find the value of the coefficient of determination . What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line? What percentage is unexplained? (Round your answer for to four decimal places. Round your answers for the percentages to two decimal place.) 12 = explained % unexplained (f) For a neighborhood with x = 33 hundred jobs, how many are predicted to be entry level jobs? (Round your answer to two decimal places.) hundred jobs