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There are 40 students in a course: 15 freshmen, 8 sophomores, 12 juniors, and 5 seniors. One student is selected at random to attend a workshop and report back to the class. What is the probability that the chosen student is a junior

Respuesta :

Answer:

The probability that the chosen student is a junior is [tex]\frac{3}{10}[/tex]

Step-by-step explanation:

Given,

The total number of students = 40,

In which, freshmen = 15,

Sophomores = 8,

Juniors = 12,

And, seniors = 5,

Thus, the probability that junior student when a student is chosen

[tex]=\frac{\text{Total possible arrangement of 1 junior student }}{\text{Total possible arrangement of 1 student}}[/tex]

[tex]=\frac{^{12}C_1}{^{40}C_1}[/tex]

[tex]=\frac{12}{40}[/tex]

[tex]=\frac{3}{10}[/tex]

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