Suppose that a 2 test of independence at the level of significance 0.005 is to be applied to the elements of a 2 2

Suppose that a χ2 test of independence at the level of significance 0.005 is to be applied to the elements of a 2 × 2 contingency table containing 2n observations, and that for some α ˆˆ (0, 1) the data have the form given in Table 10.49. For what values of α would the null hypothesis be rejected?
Table 10.49 Form of the data for Exercise 10

(1-)a (1-)n ar