Remember, probability is always expressed as a number between 0 and 1.0, not as a percent. Example: What is the probability of getting "heads" when you flip a coin? p=.50 Do not answer in percentage form if the question asks for probability. For #1 to 8, express your probabilities to two decimal places (e.g., .25), unless more are required to get to a number other than 0.

3. What is the probability of rolling 5 with a nine-sided die, then rolling another 5 with the same die?

.01

4. Four people are sitting on a couch. Two are wearing a red shirts, one is wearing a blue shirt, and one is wearing a green shirt. What is the probability of a person with a red shirt being the next one to get up and walk out the door?

.50