In an epidemiological study focusing on a biomarker A, blood samples were collected from two different ethnic groups, 'Caucasian' and 'Asian.'For the Caucasian group, the measured values of biomarker A in seven individuals are 42, 41, 47, 42, 37, 41, and 35.For the Asian group, the values of biomarker A in seven individuals are 16, 31, 20, 35, 47, 27, and 31.The null hypothesis is that the probability distributions of biomarker A in Caucasian and Asian populations are identical.You are asked to perform a Wilcoxon rank-sum test to reject or confirm the null hypothesis.What are the sums of the ranks for observations in the Caucasian and Asian groups, respectively?

MCQs on Statistics.