1. Imagine your friend is usually up late, but has come on time before. Suppose your friend could be on time or up to 30 minutes late, with all intervals of time equally likely. a. What is the probability your friend will be between 10.23 and 20.14 minutes late? b. What is the probability your friend will be more than 15 minutes late given that they called and said they will be at least 7 minutes late because of traffic?