Suppose the linear regression line y = 2.1x + 130 predicts sales based on the money spent on advertising.
If x represents the dollars spent in advertising, and y represents the company sales in dollars, about how much can the company expect in sales if it spends $150 in advertising?
choose your answer...
The company can expect
Jin sales if it spends $150 in advertising.
Previous
choose your answer...
$445
$315
$130
$465
1 answer
To determine the expected sales when $150 is spent on advertising, we can substitute \( x = 150 \) into the linear regression equation \( y = 2.1x + 130 \).
Calculating:
\[ y = 2.1(150) + 130 \]
\[ y = 315 + 130 \]
\[ y = 445 \]
Thus, the company can expect $445 in sales if it spends $150 in advertising.
