- CFA Exams
- CFA Level I Exam
- Study Session 3. Quantitative Methods (2)
- Reading 10. Sampling and Estimation
- Subject 4. Standard Error of the Sample Mean

###
**CFA Practice Question**

A survey of 144 retail stores revealed that a particular brand and model of VCR retails for $375 with a standard deviation of $20. If 90% and 95% confidence intervals are developed to estimate the true cost of the VCR, what similarities would they have?

A. point estimates

B. standard errors

C. both point estimates and standard errors

**Explanation:**The point estimates and the standard errors will be the same. The z-values will differ according to the area under the curve.

###
**User Contributed Comments**
2

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

djop2002 |
what is the point estimates? |

djop2002 |
OK :Point estimate is the value of a sample statistic of the population parameter. |