### Home > GC > Chapter 4 > Lesson 4.2.1 > Problem 4-54

When Ms. Shreve randomly selects a student in her class, she has a

If her class has

students, how many left-handed students are in Ms. Shreve’s class? If there are

left-handed students in her class, how many students are not left-handed? What is the probability that she will select a student who is not left-handed?

Assume that Ms. Shreve’s class has a total of

students. She selected one student (who was left-handed) to attend a field trip and then was told she needed to select one more student to attend. What is the probability that the second randomly selected student will also be left-handed? Since

, there are left-handed students to start out with. However, after left-handed student is selected, the probability of picking a left-handed student again becomes .