3. (4 points) Students take lecture quizzes in EAS 305 classes. Meanwhile, some students that use mobile devices have been having issues submitting their answers. The instructor suspects that the issue may be related to the operating system (OS) on the devices. Out of the 39 students that use mobile devices to take their quizzes, 18 use Mac OS, 13 use Android OS, and the rest use Windows OS. The instructor randomly selected 3 students from the 45 students as a sample for analysis. a. (1.5 points) Find the probability that all 3 students use the same OS. b. (1 point) Determine the probability all OS are contained in the sample. (1.5 points) Determine the probability that at least one of the students in the sample use Mac OS or Windows OS.