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Multiple regression predicts a single dependent variable, y, from two or more independent x variables.
MLR is a statistical technique for modeling the relationship between a dependent variable and two or more independent variables.
You own a pizza restaurant. There is a Pizza Hut across the street. You tracked average weekly prices, including coupons and specials.
Week
Your Price
Pizza Hut Price
Your Sales
1
16.95
11.50
2,208
2
12.50
2,682
3
19.99
10.50
2,061
4
13.99
12.00
2,526
5
18.88
11.00
2,158
6
22.95
9.25
1,732
7
11.99
13.50
2,877
8
15.50
2,312
9
12.75
2,606
10
14.99
2,488
Total
160. 49
115.75
23,650
a. What are the independent variables?
b. What is the dependent variable?
c. What is the regression equation?
d. What is the coefficient of determination?
e. If you charge $18.00 and Pizza Hut charges $11.00, what are your expected sales?
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Probability that the entire batch will be rejected?
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