I have two tests running alternatively in each week. Every time a test is selected with 0.50 probability and runs for an hour. Each test provides a "profit" that it makes within that hour. What I need is to compare the performance of both tests that run within the same hour on the same weekday (e.g. 6pm-7pm on Monday) so a paired t-test might be appropriate here. The question is, how many weeks are enough for me to get sufficient overlap for both tests covering an entire week? I know the coverage is >=50% for sure but I just couldn't figure out how to compute it within the following weeks. Could it be close to 100% from time to time? Thanks!