Samples of cream from each of 10 dairies (A to J ) are each divided into two portions. One portion from each is sent to Labratory I and the other to Labratory II, for bacterium counts. The counts (thousands bacteria/ml) are Use the Wilcoxon signed-rank test to assess the evidence for any consistent difference between labratorie for subsamples from the same dairy. Calculate differences as Lab II - Lab I. What is the sum of the negative ranks (W-)? What is the sum of the positive ranks (W+)? What type of test is this? What is the test statistic W? These are the critical values for a 1-tailed Wilcoxon Signed Rank test for n=10 What is the p-value for this test?.