LOL as I said earlier you are over analyzing a simple prediction.
OK I predict that there is 90 % it will happen this week and 10% it will happen next week. period, done, complete with prediction one 90+10 + 100% finished.
Now prediction 2. I predict if iOS drops this week, there is a 40,30,20,10,0 percent chance it will happen on days Mon - Friday respectively. 40+30+20+10+0 = 100% . End of prediction number two.
Both equal 100% separately since they are separate simple predictions. But yeah if you want to over analyze it, then add the two together as one and do your math and send us YOUR prediction for the next two weeks.