1. probability is a measure of how likely an event is to occur? true or false? 2. is an event an outcome or a set of outcomes? true or false? 3. the sample space is the set of all possible outcomes? true or false? 4.probabilities are written as fractions or decimals from 0 to 1, or as percents from 0% to 100%? true or false? 5.when you roll a dice, numbers 1-6 are not equally likely to show on the top face? true or false?