Below you are given a partial computer output based on a sample of 16 observations.

Coefficient Standard Error

intercept 12.924 4.425

X1 -3.682 2.630

X2 45.216 1 2.560

Analysis of Variance

Source of Variation Degrees of Freedom Sum of Squares Mean Square

Regression 4853 2426.5

Error 485.3

We want to test whether the parameter 1 is significant. The test statistic equals

Question 23 options:

-1.4

2.32

-0.172

2.5