The department wants to determine the characteristics of the students taking a particular course. Students from both the College of Commerce and Business Administration (CBA) and the College of Liberal Arts and Sciences (LAS) are taking this particular class. Of the 500 students enrolled in the course, 300 of the students are in CBA. Of the CBA students, 0.18 are freshman, 0.4 are sophomores, and 0.18 are juniors. Of the LAS students, 0.16 are sophomores, 0.04 are juniors, and 0.22 are seniors.
If we randomly select a student and find that he is a senior, what is the probability that senior is

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