The following results were obtained from a multiple regression analysis of supermarket profitability. The dependent variable, Y, is the profit (in thousands of dollars) and the independent variables, X1 and X2, are the food sales and nonfood sales (also in thousands of dollars). 
a.Write the estimated regression equation for the relationship between the variables.
b.Compute the coefficient of determination and fully interpret its meaning.
c.Carry out a test of whether Y is significantly related to the independent variables. Use a 0.05 level of significance.
d.Carry out a test to determine if there is a significant relationship between X1 and Y. Use a .05 level of significance.
e.How many supermarkets were in the sample used here?
Definitions:
Ease of Retrieval Effect
A phenomenon where individuals judge an event or concept as more frequent or influential if they can easily recall examples of it.
Working Memory Capacity
The amount of information that an individual can hold and manipulate in their mind at one time for short periods.
Sense of Self
The perception or consciousness of one's own identity and being.
Personal Relevance
The degree to which information or an event is pertinent to an individual's life and interests.
Q12: Student enrollment at a university over the
Q15: A random sample of 60 elements was
Q24: In computing an expected value (EV), the
Q26: It is believed that sales of books
Q40: The value of F<sub>0.01</sub> with 9 numerator
Q43: In a multiple regression analysis involving 10
Q48: Refer to Exhibit 13-7. The conclusion of
Q58: Marascuillo procedure is used for testing the
Q82: A lumber company has claimed that
Q84: Refer to Exhibit 10-4. The standard error