What information does a target cost-per-acquisition (cpa) bid strategy need in order to find the optimal cost-per-click (cpc) bi
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Answer : If a child's hyperactivity rating is predicted to be 18, he <u>consumed 103.125 grams</u> of food containing preservatives.
The regression (least-squares) equation given in the question is:
In the equation above, y is the predicted variable. Here the predicted variable is the subjective hyperactivity rating (on a scale of 1 to 20).
The independent variable, x, is the quantity of food containing preservatives (in grams) consumed by hyperactive children.
The question tells us that the subjective hyperactivity rating of a child is 18.
Substituting the value of y in the equation above, we have,