The probability that a randomly selected student is a junior who takes the bus is  [tex]\frac{1}{5}[/tex] .
What is probability?
Probability or chance is how likely something is to happen. If something has a low probability, it is unlikely to happen. If something has a high probability, it is likely to happen.
[tex]probability=\frac{number\ of\ favourable\ cases }{total\ number\ of cases}[/tex]
Given,
Total number of students = 100
Number of students who are juniors and take bus = 20
[tex]probability=\frac{number\ of\ favourable\ cases }{total\ number\ of cases}[/tex]
Probability of junior students who take bus = Â [tex]\frac{20}{100}[/tex]
Probability of junior students who take bus = Â [tex]\frac{1}{5}[/tex]
Hence, The probability that a randomly selected student is a junior who takes the bus is  [tex]\frac{1}{5}[/tex] .
Learn more about Probability:
https://brainly.com/question/14210034
#SPJ2