- CFA Exams
- CFA Level I Exam
- Study Session 3. Quantitative Methods (2)
- Reading 10. Sampling and Estimation
- Subject 6. Confidence Intervals for the Population Mean
CFA Practice Question
Which set of circumstances is most likely to result in a narrow confidence interval?
A. large n and a degree of confidence of 0.95
B. large n and a degree of confidence of 0.99
C. small n and a degree of confidence of 0.95
User Contributed Comments 3
| User | Comment |
|---|---|
| danlan | The smaller the confidence coefficient, the narrower interval is; The larger sample size is, the narrower interval is. |
| homersimpson | to be more precise (narrower confidence level), the probability of type 1 error increases |
| homersimpson | we have to be less sure to be sure! |