Question 1
Two variables have a Spearman’s rank correlation coefficient of–0.9872. We can conclude from this that:
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the two variables are strongly correlated.
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there is a causal connection between the two variables.
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the two variables are not correlated at all.
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the two samples are random.
Question 2
What is the nearest critical value for a Wilcoxon sign-ranked test with 15 nonzero differences,Ha:\(\style{font-family:Times New Roman}{\widetilde\mu<{\widetilde\mu}_{\text{o}}}\), andα= 0.05?
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30
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90
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25
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95