We reject H0 at significance level \alpha if
TS >= \chi 2\alpha ,(r-1)(c-1)
or equivalently
p - value = P \chi 2 ((r - 1)(c - 1)) >= TS <= \alpha
In our case r = 3 (types of beers) and c = 2 (genders) and hence p - value = P(\chi 2(2) >= 6.45) = 0.04
So we reject H0 at any significance level \alpha >= 0.04
explain how to calculate the p-value