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Question

For the variables X and Y, we collect 4 observations

with ∑ X = 10,∑ Y = 14,∑ X2 = 30,∑ Y2 = 54,∑ XY = 31 The regression line y on x is

A y = 0.8x - 5.5

B y = -0.8x - 5.5

C y = -0.8x - 5.5

D y = -0.8x + 5.5

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