Suppose a multiple linear regression model is used to explain the relationship between y, x1, and x2. A random sample of n = 12 pairs for the independent variables were selected, and the corresponding...

Suppose a multiple linear regression model is used to explain the relationship between y, x1, and x2. A random sample of n = 12 pairs for the independent variables were selected, and the corresponding values of the dependent variable were observed. The data are given in the following table.