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

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**CFA Practice Question**

A probability experiment consists of picking one marble from a box that contains a red, a yellow, and a blue marble, and then flipping a coin once. Identify the sample space. (Let R = red, Y = yellow, B = blue, H = head, and T = tail.)

B. RH, RT, YH, YT, BH, BT

C. RY, RB, YB, YR, BR, BY, HT, TH, HH, TT

A. R, Y, B, H, T

B. RH, RT, YH, YT, BH, BT

C. RY, RB, YB, YR, BR, BY, HT, TH, HH, TT

Correct Answer: B

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**User Contributed Comments**
4

User |
Comment |
---|---|

rt2007 |
what is sample space ? can anyone explain ? |

bdoggprod |
They are defining the sample space as all of the possible outcomes for the experiment. |

TammTamm |
Thanks AN for explaining stats the way it's taught in undergrad. It makes it easier to understand than the readings. |

Kennyk11 |
It should be noted that C is wrong because you can only pick one color and one side of the coin, since they are mutually exclusive (two events that cannot occur at the same time). |