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Exhibit 15-5 Below is a partial Excel output based on a sample of 25 observations. Coefficients Standard Error Intercept 145.321 48.682 x 1 25.625 9.150

Exhibit 15-5 Below is a partial Excel output based on a sample of 25 observations.

Coefficients Standard Error
Intercept 145.321 48.682
x1 25.625 9.150
x2 5.720 3.575
x3 0.823 0.183

The estimated regression equation is _____.

a. = 48.682 + 9.15x1 + 3.575x2 + 0.183x3
b. = 145.321 + 25.625x1 - 5.720x2 + 0.823x3
c. y = 0 + 1x1 + 2x2 + 3x3 +

d. E(y) = 0 + 1x1 + 2x2 + 3x3

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