In another comparison of study guides A and B, the following scores were obtained (out of
Study Guide A: 91 94 96 88 86 95
Study Guide B: 78 81 83 74 96 82 79
Use the Wilcoxon test to test the null hypothesis that the distributions of scores are the same for each study guide, against the two-sided alternative that the distributions are different.
Calculate W, the observed sum of ranks of the study guide A scores. 57.5000 [3 pt(s)]You are correct.
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What is the mean of W, under the null hypothesis? 42 [2 pt(s)]You are correct.
Your receipt no. is 155-8757 Previous Tries
What is the variance of W, under the null hypothesis? 49 [2 pt(s)]You are correct.
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Calculate the standardized test statistic. 2.2143 [3 pt(s)]You are correct.
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Which of the statistical tables should you use?
[1 pt(s)]You are correct.
Your receipt no. is 155-8673 Previous Tries
f）Calculate the p-value for the test
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