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    Making predictions based upon regression equation

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    For the multiple regression equation y-hat = 100 + 20x1 - 3x2 + 120x3
    a. identify the y-intercept partial regression coefficients
    b. if x1 = 12, x2 = 5, and x3 = 10, what is the estimated value of y?
    c. if x3 were to increase by 4, what change would be necessary in x2 in order for the estimated value of y to remain unchanged?

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    Solution :

    a. identify the y-intercept partial regression coefficients

    Intercept = 100
    Partial regression coefficient of x1 = 20
    Partial regression coefficient of x2 ...

    Solution Summary

    The solution describes the steps to understand given regression equation and predicting behavior of its variables.