Suppose that your studying tine is unifornily distribution between 4 pm and 10pm what is the probability that will study afterb8 pm
4***5***6***7***8***9***10
If your studying time is a total of 6 hours between 4 and 10 pm.
Time left after 8 pm is 2 hours.
Assuming random checking, probability that study time after 8 would be the time period between 8 and 10 divided by the total possible time from 4 to 10.