A researcher finds that 20 of 120 students failed an exam.In this case,the probability of failing this exam was ______.
A) .14
B) .17
C) .20
D) unknown

Question

Quizplus · Accepted Answer

Probability is calculated by dividing the number of outcomes in an event by the total number of possible outcomes. In this case, the probability of failing the exam is given by 20/120, which simplifies to 1/6 or about .17 (rounded to two decimal places). Therefore, the best choice is B, which corresponds to .17.

A Researcher Finds That 20 of 120 Students Failed an Exam.In