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). 15 32 50 25 5 LO USE SALT Complete parts (a) through (e), given Ex = 202, Ey = 31, Ex= 7862, Ey? = 189, Exy = 1202, and / = 0.9051. (b) Verify the given sums Ex, Zy, Ex2, Ey?, Exy, and the value of the sample correlation coefficient r. (Round your value for r to four decimal places.) EX = Ey Ex = Ey?' = Exy = (c) Find x, and y. Then find the equation of the least-squares line y = a + bx. (Round your answers to four decimal places.) X = (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 r to four decimal places. Round your answers for the percentages to two decimal place.) explained 1% unexplained 1% (f) For a neighborhood with x = 45 hundred jobs, how many are predicted to be entry level jobs? (Round your answer to two decimal places.) hundred jobs