Exercises 10.113-10.116 pertain to critical values for a Mann- Whitney test. Use Table VI in Appendix A to determine the critical value(s) in each case. For a left-tailed or two-tailed test, you will also need the relation M1−A = n1 (n1 + n2 + 1) − MA.
1. n1 = 8, n2 = 9; Significance level = 0.05
a. Right-tailed test
b. Left-tailed test
c. Two-tailed test
2. n1 = 8, n2 = 9; Significance level = 0.01
a. Right-tailed test
b. Left-tailed test
c. Two-tailed test
3. n1 = 9, n2 = 8; Significance level = 0.10
a. Right-tailed test
b. Left-tailed test
c. Two-tailed test