In a regression analysis involving 30 observations, the following estimated regression equation was obtained.
= 17.6 + 3.8×1 – 2.3×2 + 7.6×3 = 2.7×4
a. Interpret b1, b2, b3, and b4 in this estimated regression equation.
b. Estimate y when x1 = 10, x2 = 5, x3 = 1, and x4 = 2.
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