## Algebra 1

Published by Prentice Hall

# Chapter 12 - Data Analysis and Probability - 12-8 Probability of Compound Events - Practice and Problem-Solving Exercises - Page 769: 43

#### Answer

Answers may vary. The class comprised of 4 left-handed students and 16 right-handed students. a) 3.16% b) 63.16% c) 16.8%

#### Work Step by Step

a) P(both students are left-handed) $4/20 * 3/19 = 12/380$ $12/380 = 6/190$ $6/190 = .03158$ b) P(both students are right-handed) $16/20 * 15/19 = 240/380$ $240/380 = .63158$ c) P(1st student is right-handed, 2nd student is left-handed) $16/20*4/19$ $64/380$ $32/190$ $16/95$ $.16842$

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