In Testing the Hypotheses $$H _ { 0 } : \rho _ { s } = 0$$

Multiple Choice

In testing the hypotheses: $$H _ { 0 } : \rho _ { s } = 0$$ $$H _ { 1 } : D _ { s } \neq 0$$ , the Spearman rank correlation coefficient in a sample of 50 observations is 0.389. The value of the test statistic is:

A) 2.75.
B) 18.178.
C) 2.723.
D) 17.995.