Methodology
I adopted Z-Test to test my hypothesis. Compared to T- Test, Z-test is more suitable to large amound of  sample (n > 30). T-test is more often be used to analyze the sample data which smaller than 30. The sample size in this analysis is larger than 250000 so I prefer Z- test.
\(P_0=\frac{B_{weekend}}{B_{total}}\)
\(P_1=\frac{A_{weekend}}{A_{total}}\)
Besides, what I want to do is to figure out is there any difference between my  two sample.