Question

What is the probability that a randomly selected student will earn a 91 - 100 given they study for two to three hours?

Answer 1

Step-by-step explanation

Let the probability that those who earn 91-100 be Pr(A) and the probability that those who studied for 2-3 hours be Pr(B)

`Pr(A|B)=(Pr(A\cap B))/(Pr(B))=(22)/(45)`

Answer: 22/45 or 49.9%