When the Number N of Nonzero Differences in the Sample

question 180

Multiple Choice

When the number n of nonzero differences in the sample is greater than 20,which of the following distributions provide a good approximation to the distribution of the Wilcoxon signed rank statistic?

• A)The chi-square distribution
• B)The normal distribution
• C)The F distribution
• D)The Student's t distribution

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