The Rejection Region for Level $H _ { o } : \mu _ { D } \leq 0 \text { versus } H _ { \mathrm { d } } : \mu _ { D } > 0$

Essay

The rejection region for level .025 paired t test in testing $H _ { o } : \mu _ { D } \leq 0 \text { versus } H _ { \mathrm { d } } : \mu _ { D } > 0$ is __________, where the data consists of 12 independent pairs.