Specify the Rejection Region for the Wilcoxon Rank Sum Test $$n _ { 1 } = 6 , n _ { 2 } = 8 , \alpha = .10$$

Specify the rejection region for the Wilcoxon rank sum test in the following situation. $$n _ { 1 } = 6 , n _ { 2 } = 8 , \alpha = .10$$
$H _ { 0 }$ : Two probability distributions, 1 and 2, are identical
$H _ { \mathrm { a } }$ : Probability distribution of population 1 is shifted to the right or left of the probability distribution for population 2