Asked by Danny

A regression analysis between sales (in $1000) and advertising (in $100) resulted in the following least squares line: = 75 + 6x. This implies that if advertising is $800, then the predicted amount of sales (in dollars) is:
A) $4875
B) $123,000
C) $487,500
D) $12,300

Answers

Answered by MathMate
the function of sales (in $1000) f(x) is given by 75+6x where x is advertising dollars in $100.

f(x) = 75+6x
when advertising dollars = $800, x=8
substituting in the above equation,
f(x) = 75+6*8 = 123
So sales = 123 * $1000 = ??
Answered by Danny
Thank you, MathMate
Answered by MathMate
You're welcome!
Answered by brenda
judy has a flower shop and is considering increasing her advertising budget. she has been advertising in the local newspaper for the past five weeks and the following table reveals to her that her sales are directly tied to the amount of money she spends on advertising. use a linier regression analysis for the volume of sales.
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