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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 | 9.0 | 9.4 | 10.3 | 8.0 | 8.3 | 8.7 |

y | 10.0 | 18.8 | 21.6 | 10.2 | 11.4 | 13.1 |

Complete parts (a) through (e), given Σx = 53.7, Σy = 85.1, Σx^{2} = 484.03, Σy^{2} = 1325.61, Σxy = 779.39, and r ≈ 0.882.

(a) Verify the given sums Σx, Σy, Σx^{2}, Σy^{2}, Σxy, and the value of the sample correlation coefficient r. (Round your value for r to three decimal places.)

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