Below you are given a partial computer output from a multiple regression analysis based on a sample of 16 observations. Coefficients Standard Error
Constant 12.924 4.425
x1 -3.682 2.630
x2 45.216 12.560
Analysis of Variance
Source of Variation Degrees of Freedom Sum of Squares Mean Square F
Regression 4853 2426.5
Error 485.3
We want to test whether the parameter β1 is significant. The test statistic equals:.