For the Regression Equation $= 20 + 8 x _ { 1 } + 5 x _ { 2 } + 3 x _ { 1 } x _ { 2 }$

question 50

Multiple Choice

For the regression equation $= 20 + 8 x _ { 1 } + 5 x _ { 2 } + 3 x _ { 1 } x _ { 2 }$ , which combination of $x _ { 1 }$ and $x _ { 2 }$ , respectively, results in the largest average value of y?

• A) 3 and 5.
• B) 5 and 3.
• C) 6 and 3.
• D) 3 and 6.

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