6.25. An analyst wanted to t the regression model Y,- = ,60 + 161 X" + ,6sz + 13an + 3;, i = 1, . . . , n, by the method of least squares when it is

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6.25. An analyst wanted to fit the regression model Y,- = ,60 + 161 X“ + ,6sz + 13an + 3;,i = 1, . . . , n, by the method of least squares when it is known that ,82 = 4. How can the analystobtain the desired fit by using a multiple regression computer program?