) During the campus registration period, students arrived in the registration office, manned by one attendant, at a mean inter-arrival time of 30 minutes. Provided this scenario follows a Poisson process and each student spends an average of 5 minutes being served by the attendant: i. what is the number of students expected in the registration office? ii. what is the number of students expected in the queue? iii. how much time can each student expect to spend in the registration office?