Question: Problem 4 The following results were obtained from a multiple regression analysis of Mohideen supermarket profitability.The dependent variable, Y, is the profit (in Hundred of

Problem 4

The following results were obtained from a multiple regression analysis of Mohideen supermarket profitability.The dependent variable, Y, is the profit (in Hundred of dollars) and the independent variables, X₁ and X₂, are the food sales and nonfood sales (in thousands of dollars).

CoefficientStandard Errort- valuep-value

Constant-15.062

X₁0.09720.0540.0750.132

X₂0.24840.0923.4570.0075

Coefficient of determination = 0.7139

a)Use the output shown above and write equation that can be used to predict themonthly sales.

b)Interpret the coefficients of the estimated regression equation found in Part a.

c)What can you say about the strength of this relationship?

d)Carry out a test of whether X₁ and Y are significantly related.Use a .05 level of significance.

e)Carry out a test of whether X₂and Y is significantly related.Use a .05 level of significance.

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