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In a Wilcoxon signed rank test, the test statistic is calculated as 20. If there are...

In a Wilcoxon signed rank test, the test statistic is calculated as 20. If there are n=10 observations for which Ha D>0, and a test is performed at the 5% significance level, then:
A )reject the null hypothesis
B )dont reject the null hypothesis
C )the test results are inconclusive
D )perform a parametric test

Math   Statistics-And-Probability   
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