Exhibit 15-4 a. y Bo+B₁x₁ + B₂x2 + ε b. E(y)-Bo+BIxI c. ỹ-bo+bị xị+ by x2 d. E(y)-Bo+B₁x₁ + B252 Refer to Exhibit 15-4. Which equation describes the multiple regression model? equation a O equation b O equation c O equation d
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