Find the Critical Value $\mathrm { n } = 20 , \alpha = 0.01$

Multiple Choice

Find the critical value. Assume that the test is two-tailed and that n denotes the number of pairs of data.
- $\mathrm { n } = 20 , \alpha = 0.01$

A) $0.570$
B) $\pm 0.570$
C) $- 0.570$
D) $\pm 0.447$