Question

the law of probability is used to: prove every event is certain change the outcome of an event calculate the likelihood of outcomes

Explanation:

Probability laws are about quantifying the chance of different outcomes. They don't prove events are certain (as there are always uncertainties in many real - world events). Also, probability laws don't change the actual outcome of an event (the outcome is determined by the nature of the event and its conditions). But they are specifically designed to calculate the likelihood of various outcomes.

Answer:

calculate the likelihood of outcomes