12) An economist is studying the job market in Denver area neighbourhoods. Let x represent the total number of jobs in a given neighbourhood, and let y represent the number of entry-level jobs in the same neighbourhood. A sample of six Denver neighbourhoods gave the following information (units in hundreds of jobs).
x14 30 48 28 50 25
y 2 4 5 5 9 3
Complete parts (a) through (e), given Σx = 195, Σy = 28, Σx2 = 7309, Σy2 = 160, Σxy = 1053, and r ≈ 0.847.
(b) Verify the given sums Σ
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