Question: If you will, please explain so that I can understand better. Thanks much. Let x be per capita income in thousands of dollars. Let y
If you will, please explain so that I can understand better. Thanks much.



Let x be per capita income in thousands of dollars. Let y be the number of medical doctors per 10,000 residents. Six small cities in Oregon gave the following information about x and y. X 8.4 9.6 9.9 8.0 8.3 8.7 y 9.4 18.4 21.8 10.2 11.4 13.1 Complete parts (a) through (e), given Ex = 52.9, Ey = 84.3, Ex = 469.31, Ey = 1307.77, Exy = 761.61, and / # 0.970. (a) Draw a scatter diagram displaying the data. Graph Layers After you add an object to the graph you can use Graph Layers to view and edit its properties. Fill Na Solution Help WebAssign. Graphing Tool (b) Verify the given sums Ex, Zy, Ex , Ey , Exy, and the value of the sample correlation coefficient r. (Round your value for / to three decimal places.) Ex = 52.9 Zy = 84.3 Ex2 = 489.31 IV2 = 1307.77 Exy = 761.61 /= 0.970(c) Find x, and y. Then find the equation of the least-squares line y = a + bx. (Round your answers for x and y to two decimal places. Round your answers for a and b to three decimal places.) (d) Graph the least-squares line. Be sure to plot the point (x, y) as a point on the line. 100 y 100 50 50 0 8 X 10 2 4 6 8 10 O-50 O-50 y 100 y 100 50 50 0 - 2 8 10 X 2 4 8 X 10 O-50 O-50 (e) Find the value of the coefficient of determination /2. 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 three decimal places. Round your answers for the percentages to one decimal place.) 2 = explained unexplained %(f) Suppose a small city in Oregon has a per capita income of e of 10.0 thousand dollars. What is the M.D.s per 10,000 residents d number of M.D.s per 10,000 residents? (Round your answer to two decimal places.)
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