Need answer to the highlighted question #4

Questions 1-4: The number of classes (it) a student takes In a given semester follows the following probability distribution: X 0 1 2 PM) . 0.25 0.15 1. What is the probability they take 5 classes? The probability that they take 5 classes is 0.1. 2. What Is the probability they take at least one class? The probability they take at least one class is 0.6. 3. What is the probability a student will take 2 or 3 classes in a semester? The probability a student will take 2 or 3 classes is 0.23. 4. What Is the expected number of classes a student will take ill..a..i.V..'1 semester? (show your work on this one, and a screenshot of how you worked it out on the calculator or excel)