A regression analysis between sales (in $1000) and advertising (in $) yielded the least squares line = 80 000 + 5x. This implies that an:
A) increase of $1 in advertising is expected to result in an increase of $5 in sales.
B) increase $5 in advertising is expected to result in an increase of $5000 in sales.
C) increase of $1 in advertising is expected to result in an increase of $80 005 in sales.
D) increase of $1 in advertising is expected to result in an increase of $5000 in sales.
Correct Answer:
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