某研究欲比较单纯肥胖者(n[img=~/QImg/2013-10-14-10-46-38/image010.jpg]=8)与正常人(n[img=~/QImg/2013-10-14-10-46-38/image013.jpg]=10)血浆总皮质醇是否有差异,采用Wilcoxon两样本比较的秩和检验。计算得单纯肥胖者的秩和T[img=~/QImg/2013-10-14-10-46-38/image010.jpg]=74.5,正常人的秩和T[img=~/QImg/2013-10-14-10-46-38/imag