A what is the estimated regression equation b determine if

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A company has recorded data on the weekly sales for its product (y), the unit price of the competitor's product (x1), and advertising expenditures (x2). The data resulting from a random sample of 7 weeks follows. Use SPSS or Excel's Regression Tool to answer the following questions.

Week

Price

Advertising

Sales

1

.33

5

20

2

.25

2

14

3

.44

7

22

4

.40

9

21

5

.35

4

16

6

.39

8

19

7

.29

9

15

a. What is the estimated regression equation?

b. Determine if price is significantly related to sales. Use a = 0.10.

c. Determine if advertising is significantly related to sales. Use a = 0.10.

d. Find and interpret the multiple coefficient of determination, R2.

Reference no: EM13617976

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