Consider the skin graft data of Example 8.4.1. Table 8.5.5, at the end of Section 8.5, shows the first steps in conducting a Wilcoxon signed-rank test of the null hypothesis that HL-A compatibility has no effect on graft survival time. Complete this test. Use α = 0.05 and use the directional alternative that survival time tends to be greater when compatibility score is close.