In an experiment to compare the effectiveness of two drugs A and B in reducing blood glucose concentrations, drug A was administered to 25 patients, and drug B was administered to 15 patients. The reductions in blood glucose concentrations for the 25 patients who received drug A are given in Table 10.44. The reductions in concentrations for the 15 patients who received drug B are given in Table 10.45. Test the hypothesis that the two drugs are equally effective in reducing blood glucose concentrations by using theWilcoxon-Mann-Whitney ranks test.
Table 10.44 Data for patients who receive drug A in Exercise 4

Table 10.45 Data for patients who receive drug B in Exercise 4

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0.35 1.12 154 013 0.77 0.16 1.20 0.40 138 0.39 0.58 0.04 0.44 0.75 0.71 1.64 0.49 0.90 0.83 0.28 1.50 1.73 15 0.72 0.91 1.78 1.25 1.01 1.82 1.95 1.81 0.68 1.48 1.59 0.89 0.86 1.63 126 1.07 1.31