In Testing $H _ { 0 } : \beta _ { 1 } = 0 \text { versus } H _ {\pm } : \beta _ { 1 } > 0$

Short Answer

In testing $H _ { 0 } : \beta _ { 1 } = 0 \text { versus } H _ {\pm } : \beta _ { 1 } > 0$ using a sample of 18 observations, the rejection region for .025 level test is $t \geq$ __________.