Which of the Following Equations Used in Regression Is Incorrect $\mu _ { y } = \beta _ { 0 } + \beta _ { 1 } ^ { x }$

Multiple Choice

Which of the following equations used in regression is incorrect?

A) $\mu _ { y } = \beta _ { 0 } + \beta _ { 1 } ^ { x }$
B) $e = y - \hat { y }$
C) all of these
D) $\varepsilon = y - \mu _ { y }$
E) $y = b _ { 0 } + b _ { 1 } x$