The scatterplot shown below represents a typical shape of a cubic regression model y = β0 + β1x + β2x2 + β3x3 + ε. 
Which of the following is a predicted value 
if x is equal to 12?
Definitions:
Education Levels
Classifications that describe the highest degree of education completed by individuals or required for certain jobs.
Means
Means refer to the average values of sets of data, calculated by summing all values and dividing by the number of data points.
≠ 0
Symbol indicating that a quantity or difference is not equal to zero, often used in hypotheses testing to signify a non-null effect.
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