The owner of a retail store randomly selected the following ...

[erikka246]

The owner of a retail store randomly selected the following weekly data on profits and advertising cost.

 

Week	Advertising Cost ($)	Profit ($)
1	0	200
2	50	270
3	250	420
4	150	300
5	125	325

 

a.	Write down the appropriate linear relationship between advertising cost and profits. Which is the dependent variable? Which is the independent variable?
b.	Calculate the least squares estimated regression line.
c.	Predict the profits for a week when $200 is spent on advertising.
d.	At 95% confidence, test to determine if the relationship between advertising costs and profits is statistically significant.
e.	Calculate the coefficient of determination.

[jamezpowell]

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[erikka246]

Thanks for the timely response, appreciate it

[nathang24]

Gracias!