Chapter 12, Problem 28PS

Using Table E.6, determine the lower-tail critical value for the Wilcoxon rank sum test statistic, $T_{1,}$ in each of the following one-tail tests:

$\begin{array}{l}\text{a}\text{.}\alpha =0.05,n_1=6,n_2=8\\ \text{b}\text{.}\alpha =0.025,n_1=6,n_2=8\\ \text{c}\text{.}\alpha =\text{0}\text{.01,}{n}_{\text{1}}=6,n_2=8\\ \text{d}\text{.}\alpha =0.005,n_1=6,n_2=8\end{array}$