In testing the independence of two variables described in a contingency table, determine the critical value of

Question:

In testing the independence of two variables described in a contingency table, determine the critical value of chi-square if the test is to be conducted at the
a. α = 0.025 level and df = 5
b. α = 0.05 level and df = 8
c. α = 0.01 level and df = 6
d. α = 0.10 level and df = 4