- CFA Exams
- CFA Exam: Level I 2021
- Study Session 2. Quantitative Methods (1)
- Reading 8. Probability Concepts
- Subject 1. Introduction

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**CFA Practice Question**

The ratio of males to females at OWJC is 3:5. P(female) = ______ (to nearest 0.1%)

B. 62.5%

C. 133.3%

A. 60%

B. 62.5%

C. 133.3%

Correct Answer: B

If the ratio of males to females is 3:5, then for every 8 students, 3 are male and 5 are female. Now, P(female) is ratio of success (female) to total. Thus, P(female) = 5:8 = 5/8 = 0.625 = 62.5%.

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**User Contributed Comments**
1

User |
Comment |
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dbedford |
P(f) = f:m = 5:3 So P(f) = f/f+m = 5/8 |