Answer:
[tex]P(junior)=\frac{9}{35}[/tex]
[tex]P(freshmen)=\frac{5}{35}=\frac{1}{7}[/tex]
Step-by-step explanation:
In a class there are 13 seniors, 9 juniors, 8 sophomores and 5 freshmen
Total number of students= [tex]13+9+8+5=35[/tex]
one student is selected at random from this class, selected student is Junior
there 9 juniors in the class
[tex]P(junior)= \frac{juniors}{total} =\frac{9}{35}[/tex]
there 5 freshmen in the class
[tex]P(freshmen)= \frac{freshmen}{total} =\frac{5}{35}=\frac{1}{7}[/tex]