Question: The breakdown of the students enrolled in a university course by class (F: freshman, So: sophomore, J: junior, Se: senior) and academic major (S: science, mathematics, or engineering, L: liberal arts, O: other) is shown in the two-way classification table.
A student enrolled in the course is selected at random. Adjoin the row and column totals to the table and use the expanded table to find the probability of each of the following events.
a. The student is a freshman.
b. The student is a liberal arts major.
c. The student is a freshman liberal arts major.
d. The student is either a freshman or a liberal arts major.
e. The student is not a liberal arts major.