In Exercises 5–10, find the critical value(s) and rejection region(s) for the type of chi-square test with sample size n and level of significance a.
5. Right-tailed test, 6. Right-tailed test,
n = 27, a = 0.05 n = 10, a = 0.10
7. Left-tailed test, 8. Left-tailed test,
n = 7, a = 0.01 n = 24, a = 0.05
9. Two-tailed test, 10. Two-tailed test,
n = 81, a = 0.10 n = 61, a = 0.01