Section 7.5 In Exercises 51-54, 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. 51. Right-tailed test, n = 20, = 0.05 52. Two-tailed test, n = 14, a = 0.01 53. Two-tailed test, n = 41, a = 0.10 54. Left-tailed test, n = 6, = 0.05