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Question

# In another comparison of study guides A and B, the following scores were obtained (out of

100):

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.

Your receipt no. is 155-4827 Previous Tries

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.

Your receipt no. is 155-6744 Previous Tries

Calculate the standardized test statistic. 2.2143 [3 pt(s)]You are correct.

Your receipt no. is 155-646 Previous Tries

Which of the statistical tables should you use?

Incorrect t-distribution

Incorrect -distribution

Correct: z-distribution

[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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