Dixie Showtime Movie Theaters, Inc., owns and operates a chain of cinemas in several markets in the southern U.S. The owners would like to estimate weekly gross revenue as a function of advertising expenditures. Data for a sample of eight markets for a recent week follow.

Market	Weekly Gross Revenue ($100s)		Television Advertising ($100s)	Newspaper Advertising ($100s)
Mobile	103.5		4.9	1.7
Shreveport	51.6		3.3	3
Jackson	75.8		4	1.5
Birmingham	127.8		4.2	4
Little Rock	134.8		3.2	4.3
Biloxi	101.4		3.6	2.2
New Orleans	237.8		5	8.5
Baton Rouge	219.6		6.7	5.9

(a)

Use the data to develop an estimated regression with the amount of television advertising as the independent variable.

Let x represent the amount of television advertising.

If required, round your answers to four decimal places. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank. (Example: -300)

(b)	How much of the variation in the sample values of weekly gross revenue does the model in part (a) explain?
	If required, round your answer to two decimal places.

(c)

Use the data to develop an estimated regression equation with both television advertising and newspaper advertising as the independent variables.

Let x₁ represent the amount of television advertising.

Let x₂ represent the amount of newspaper advertising.

If required, round your answers to four decimal places. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank. (Example: -300)

(d)	How much of the variation in the sample values of weekly gross revenue does the model in part (c) explain?
	If required, round your answer to two decimal places.