SOLUTION: In a second-semester English class, 25% of the students are sophomores and the rest freshmen; 20% of the sophomores are repeating the course and 15% of the freshmen gained admissio

Algebra ->  Probability-and-statistics -> SOLUTION: In a second-semester English class, 25% of the students are sophomores and the rest freshmen; 20% of the sophomores are repeating the course and 15% of the freshmen gained admissio      Log On


   



Question 919857: In a second-semester English class, 25% of the students are sophomores and the rest freshmen; 20% of the sophomores are repeating the course and 15% of the freshmen gained admission to the course by advanced placement. The professor randomly selects a student to comment on the assignment. (Round your answers to three decimal places.)
(a) Find the probability that the professor selects a sophomore who is repeating the course.

(b) Find the probability that the professor selects a freshman who gained advanced placement admission to the class.

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
a) P = .25%2A.20
b) P = .75%2A.15