Wilcoxon test (rank sum test and signed rank test) provides two asymptotic p-val

Question

Wilcoxon test (rank sum test and signed rank test) provides two asymptotic p-values, one based on t-distribution and other based on Z-distribution. Which one is correct? 3. Asymptotic p-value based on t-distribution can be used when sample size is below 5 per group Asymptotic p-value based on z-distribution can be used when sample size is above 5 per group Asymptotic p-value based on t-distribution can be used when sample size is below 30 otherwise p-value based on z-distribution should be preferred Asymptotic p-value based on z-distribution should be used always irrespective of sample size a. b. c. d.

Explanation / Answer

option C is Correct.

Asymptotic p value based on t distribution can be used when sample size is below 30 otherwise p value based on z distribution should be preferred

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