25 A correlation is computed using data from 18 people What

25. A correlation is computed using data from 18 people. What is the critical cutoff for a two-tailed hypothesis test with a p level of 0.05? Use formula dfr = N – 2 and table B.6 in Appendix B of your textbook (page B-9). a. -0.542 and 0.542 b. -0.590 and 0.590 c. -0.468 and 0.468 d. -0.400 and 0.400

Solution

df = 18-2 = 16, for alpha = 0.05 and 2 tailed test, we find critical value of

0.468 (plus or minus)

= -0.468 and 0.468