Suppose you were helping to stock shelves at the health food store where you work. You have opened and stocked 40 cases of merchandise so far, which is 80% of the cases. How many cases did you have to start?

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.